Deck 6: Rational Expressions, Equations, and Functions

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Question
Simplify the rational expression. 6x10x60\frac { 6 - x } { 10 x - 60 }

A) 14,x6- \frac { 1 } { 4 } , x \neq 6
B) 110,x6- \frac { 1 } { 10 } , x \neq 6
C) 6,x66 , x \neq 6
D) 10,x610 , x \neq 6
E) 16,x6\frac { 1 } { 6 } , x \neq 6
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Question
The average cost Cˉ\bar C for a manufacturer to produce x units of a product is given by Cˉ=1.25x+3510x\bar { C } = \frac { 1.25 x + 3510 } { x } . Describe the domain.

A)all x>0x > 0
B)all x>1.25x > 1.25
C)all x3510x \neq 3510
D)all integers >0> 0
E)all x0x \neq 0
Question
Find the domain of the rational function. f(y)=y10y(y+2)f ( y ) = \frac { y - 10 } { y ( y + 2 ) }

A) (,10)(10,)( - \infty , 10 ) \cup ( 10 , \infty )
B) (,2)(2,10)(10,)( - \infty , - 2 ) \cup ( - 2,10 ) \cup ( 10 , \infty )
C) (,2)(2,)( - \infty , - 2 ) \cup ( - 2 , \infty )
D) (,)( - \infty , \infty )
E) (,2)(2,0)(0,)( - \infty , - 2 ) \cup ( - 2,0 ) \cup ( 0 , \infty )
Question
Simplify the rational expression. x2+8xy9y2x2+10xy+9y2\frac { x ^ { 2 } + 8 x y - 9 y ^ { 2 } } { x ^ { 2 } + 10 x y + 9 y ^ { 2 } }

A) xyx+y,x9y\frac { x - y } { x + y } , x \neq - 9 y
B) xyx+9y,xy\frac { x - y } { x + 9 y } , x \neq y
C) x+yx9y,x9y\frac { x + y } { x - 9 y } , x \neq 9 y
D) x+9yx+y,xy\frac { x + 9 y } { x + y } , x \neq - y
E) x9yx+9y,x9y\frac { x - 9 y } { x + 9 y } , x \neq - 9 y
Question
Simplify the rational expression. y39yy2+5y24\frac { y ^ { 3 } - 9 y } { y ^ { 2 } + 5 y - 24 }

A) y3y8,y8\frac { y - 3 } { y - 8 } , y \neq 8
B) y+38,y8,y3\frac { y + 3 } { 8 } , y \neq - 8 , y \neq 3
C) y(y+3)y+8,y3\frac { y ( y + 3 ) } { y + 8 } , y \neq 3
D) y918,y0,y8- \frac { y - 9 } { 18 } , y \neq 0 , y \neq 8
E) y3y+3,y3\frac { y - 3 } { y + 3 } , y \neq - 3
Question
Find the domain of the rational function. f(x)=x2+46f ( x ) = \frac { x ^ { 2 } + 4 } { 6 }

A) (,)( - \infty , \infty )
B) (,4)(4,6)(6,)( - \infty , 4 ) \cup ( 4,6 ) \cup ( 6 , \infty )
C) (,4)(4,4)(4,)( - \infty , - 4 ) \cup ( - 4,4 ) \cup ( 4 , \infty )
D) (,6)(6,)( - \infty , 6 ) \cup ( 6 , \infty )
E) (,4)(4,)( - \infty , 4 ) \cup ( 4 , \infty )
Question
Simplify the rational expression. 7xy2xy2+x\frac { 7 x y ^ { 2 } } { x y ^ { 2 } + x }

A) 7x+1,x1\frac { 7 } { x + 1 } , x \neq - 1
B) 7y2xy2+1,y0\frac { 7 y ^ { 2 } } { x y ^ { 2 } + 1 } , y \neq 0
C) 7y2y2+1,x0\frac { 7 y ^ { 2 } } { y ^ { 2 } + 1 } , x \neq 0
D) 7y2y2+x,y0\frac { 7 y ^ { 2 } } { y ^ { 2 } + x } , y \neq 0
E) 7x,x0\frac { 7 } { x } , x \neq 0
Question
Simplify the rational expression. 3xy+5x2y2xy4\frac { 3 x y + 5 x ^ { 2 } y ^ { 2 } } { x y ^ { 4 } }

A) 3x+5yy3,x0,y0\frac { 3 x + 5 y } { y ^ { 3 } } , x \neq 0 , y \neq 0
B) 3y+5x2y2,x0,y0\frac { 3 y + 5 x ^ { 2 } } { y ^ { 2 } } , x \neq 0 , y \neq 0
C) 3+5x2y2y3,y0\frac { 3 + 5 x ^ { 2 } y ^ { 2 } } { y ^ { 3 } } , y \neq 0
D) x(3y+5)y2,y0\frac { x ( 3 y + 5 ) } { y ^ { 2 } } , y \neq 0
E) 3+5xyy3,x0,y0\frac { 3 + 5 x y } { y ^ { 3 } } , x \neq 0 , y \neq 0
Question
Find the domain of the rational function. h(t)=10t2t24t45h ( t ) = \frac { 10 t ^ { 2 } } { t ^ { 2 } - 4 t - 45 }

A) (,0)(0,)( - \infty , 0 ) \cup ( 0 , \infty )
B) (,)( - \infty , \infty )
C) (,5)(5,0)(0,)( - \infty , - 5 ) \cup ( - 5,0 ) \cup ( 0 , \infty )
D) (,0)(0,9)(9,)( - \infty , 0 ) \cup ( 0,9 ) \cup ( 9 , \infty )
E) (,5)(5,9)(9,)( - \infty , - 5 ) \cup ( - 5,9 ) \cup ( 9 , \infty )
Question
Simplify the rational expression. 30x2+11x7100x249\frac { 30 x ^ { 2 } + 11 x - 7 } { 100 x ^ { 2 } - 49 }

A) 3x110x+7,x107\frac { 3 x - 1 } { 10 x + 7 } , x \neq \frac { 10 } { 7 }
B) 10x73,x0\frac { 10 x - 7 } { 3 } , x \neq 0
C) 710x3,x0\frac { 7 - 10 x } { 3 } , x \neq 0
D) 10x+710x7,x710\frac { 10 x + 7 } { 10 x - 7 } , x \neq \frac { 7 } { 10 }
E) 3x110x7,x710\frac { 3 x - 1 } { 10 x - 7 } , x \neq \frac { 7 } { 10 }
Question
Find the domain of the rational function. f(x)=9x5f ( x ) = \frac { 9 } { x - 5 }

A) (,5)(5,)( - \infty , 5 ) \cup ( 5 , \infty )
B) (,9)(9,)( - \infty , 9 ) \cup ( 9 , \infty )
C) (,5)(5,5)(5,)( - \infty , - 5 ) \cup ( - 5,5 ) \cup ( 5 , \infty )
D) (,)( - \infty , \infty )
E) (,5)(5,9)(9,)( - \infty , 5 ) \cup ( 5,9 ) \cup ( 9 , \infty )
Question
Find the domain of the rational function. f(x)=xx281f ( x ) = \frac { x } { x ^ { 2 } - 81 }

A) (,0)(0,9)(9,)( - \infty , 0 ) \cup ( 0,9 ) \cup ( 9 , \infty )
B) (,9)(9,9)(9,)( - \infty , - 9 ) \cup ( - 9,9 ) \cup ( 9 , \infty )
C) (,9)(9,)( - \infty , 9 ) \cup ( 9 , \infty )
D) (,0)(0,)( - \infty , 0 ) \cup ( 0 , \infty )
E) (,)( - \infty , \infty )
Question
Find the domain of the rational function. h(x)=6xx2+4h ( x ) = \frac { 6 x } { x ^ { 2 } + 4 }

A) (,2)(2,2)(2,)( - \infty , - 2 ) \cup ( - 2,2 ) \cup ( 2 , \infty )
B) (,)( - \infty , \infty )
C) (,6)(6,)( - \infty , 6 ) \cup ( 6 , \infty )
D) (,2)(2,6)(6,)( - \infty , 2 ) \cup ( 2,6 ) \cup ( 6 , \infty )
E) (,0)(0,)( - \infty , 0 ) \cup ( 0 , \infty )
Question
Simplify the rational expression. 3x210x25403xx2\frac { 3 x ^ { 2 } - 10 x - 25 } { 40 - 3 x - x ^ { 2 } }

A) x+5x5,x8\frac { x + 5 } { x - 5 } , x \neq 8
B) 3x+5x+8,x5- \frac { 3 x + 5 } { x + 8 } , x \neq 5
C) x3537x,x0\frac { x - 35 } { 37 - x } , x \neq 0
D) 3x+5x5,x5- \frac { 3 x + 5 } { x - 5 } , x \neq - 5
E) x5x+8,x8\frac { x - 5 } { x + 8 } , x \neq - 8
Question
Find the ratio of the area of the shaded portion to the total area of the figure. A = 5 and B = 6.
 <strong>Find the ratio of the area of the shaded portion to the total area of the figure. A = 5 and B = 6.  </strong> A)  \frac { x } { x + 6 }  B) 5 6 C)  \frac { x } { x + 5 }  D)  \frac { x } { x + 1 }  E)  \frac { x ( x + 5 ) } { x + 6 }  <div style=padding-top: 35px>

A) xx+6\frac { x } { x + 6 }
B) 5
6
C) xx+5\frac { x } { x + 5 }
D) xx+1\frac { x } { x + 1 }
E) x(x+5)x+6\frac { x ( x + 5 ) } { x + 6 }
Question
A machine shop has a setup cost of $3000 for the production of a new product. The cost, C, of labor and material for producing each unit is $10.75. The average cost function for producing x units is given by Cˉ=C/x\bar { C } = C / x . Determine the domain of the average cost function.

A)all real numbers
B)all x>10.75x > 10.75
C)all x0x \neq 0
D)all integers x>0x > 0
E)all integers x>3000x > 3000
Question
Evaluate the rational function f(x)=8xx+13f ( x ) = \frac { 8 x } { x + 13 } at x=-13 and simplify. If this is not possible, state the reason.

A)0
B)-13
C)4
D)-104
E)undefined  (division by 0 ) \text { (division by } 0 \text { ) }
Question
Simplify the rational expression. a+3a2+6a+9\frac { a + 3 } { a ^ { 2 } + 6 a + 9 }

A) 17a+3,a37\frac { 1 } { 7 a + 3 } , a \neq - \frac { 3 } { 7 }
B) 1a2+9,a3\frac { 1 } { a ^ { 2 } + 9 } , a \neq 3
C) 1a+9,a9\frac { 1 } { a + 9 } , a \neq - 9
D) 1a+3,a3\frac { 1 } { a + 3 } , a \neq - 3
E) 13a+9,a31\frac { 1 } { 3 a + 9 } , a \neq - \frac { 3 } { 1 }
Question
Simplify the rational expression. 9x236x72x2\frac { 9 x ^ { 2 } - 36 x } { 72 x ^ { 2 } }

A) 9x248x\frac { 9 x ^ { 2 } - 4 } { 8 x }
B) x48x\frac { x - 4 } { 8 x }
C) x98\frac { x - 9 } { 8 }
D) 14x8x\frac { 1 - 4 x } { 8 x }
E) 136x8\frac { 1 - 36 x } { 8 }
Question
Evaluate the rational function f(x)=7xx+5f ( x ) = \frac { 7 x } { x + 5 } at x=-6 and simplify. If this is not possible, state the reason.

A)85
B)55
C)6
D)42
E)undefined ( division by 0 ) ( \text { division by } 0 \text { ) }
Question
Divide and simplify. x2+816(x+1)÷x+96(x21)\frac { x ^ { 2 } + 81 } { 6 ( x + 1 ) } \div \frac { x + 9 } { 6 \left( x ^ { 2 } - 1 \right) }

A) (x1)(x9),x6,x1( x - 1 ) ( x - 9 ) , x \neq - 6 , x \neq - 1
B) 6(x1)x9,x6,x9\frac { 6 ( x - 1 ) } { x - 9 } , x \neq - 6 , x \neq 9
C) x+9x+1,x6,x9\frac { x + 9 } { x + 1 } , x \neq 6 , x \neq 9
D) (x1)(x2+81)x+9,x1\frac { ( x - 1 ) \left( x ^ { 2 } + 81 \right) } { x + 9 } , x \neq - 1
E) (x1)(x2+81)36(x+9),x1\frac { ( x - 1 ) \left( x ^ { 2 } + 81 \right) } { 36 ( x + 9 ) } , x \neq 1
Question
One swimming pool is circular and another is rectangular. The rectangular pool's width is six times its depth. Its length is 12 feet more than its width. The circular pool has a diameter that is twice the width of the rectangular pool, and it is 2 feet deeper. Find the ratio of the circular pool's volume to the rectangular pool's volume.

A) 2π2 \pi
B) π\pi
C) 1π\frac { 1 } { \pi }
D) π2\pi ^ { 2 }
E) 6π6 \pi
Question
Divide and simplify. x2y22x216x÷(xy)22xy\frac { x ^ { 2 } - y ^ { 2 } } { 2 x ^ { 2 } - 16 x } \div \frac { ( x - y ) ^ { 2 } } { 2 x y }

A) y(xy)232x2,x0\frac { y ( x - y ) ^ { 2 } } { 32 x ^ { 2 } } , x \neq 0
B) x(xy)4(x+y),x0\frac { x ( x - y ) } { 4 ( x + y ) } , x \neq 0
C) y(x+y)(x8)(xy),x0\frac { y ( x + y ) } { ( x - 8 ) ( x - y ) } , x \neq 0
D) yx8,x0\frac { y } { x - 8 } , x \neq 0
E) yx264,x0\frac { y } { x ^ { 2 } - 64 } , x \neq 0
Question
Multiply and simplify. x3+6x249x294x36x249x+294x236x\frac { x ^ { 3 } + 6 x ^ { 2 } - 49 x - 294 } { x ^ { 3 } - 6 x ^ { 2 } - 49 x + 294 } \cdot \frac { x ^ { 2 } - 36 } { x }

A) (x6)(x7)x,x0,x±7\frac { ( x - 6 ) ( x - 7 ) } { x } , x \neq 0 , x \neq \pm 7
B) (x+6)(x+7)x,x±6,x0\frac { ( x + 6 ) ( x + 7 ) } { x } , x \neq \pm 6 , x \neq 0
C) (x6)2x(x+7),x7,x6\frac { ( x - 6 ) ^ { 2 } } { x ( x + 7 ) } , x \neq - 7 , x \neq - 6
D) (x+6)2x(x7),x7,x6\frac { ( x + 6 ) ^ { 2 } } { x ( x - 7 ) } , x \neq 7 , x \neq 6
E) (x+6)2x,x±7,x6\frac { ( x + 6 ) ^ { 2 } } { x } , x \neq \pm 7 , x \neq 6
Question
Multiply and simplify. 16x214x2+25x+255x229x42x220x+10060+4xx24x229x+7\frac { 16 x ^ { 2 } - 1 } { 4 x ^ { 2 } + 25 x + 25 } \cdot \frac { 5 x ^ { 2 } - 29 x - 42 } { x ^ { 2 } - 20 x + 100 } \cdot \frac { 60 + 4 x - x ^ { 2 } } { 4 x ^ { 2 } - 29 x + 7 }

A) (4x+1)(5x+6)(x+7)(4x+5)(x+10)(5x),x54,x5,x6\frac { ( 4 x + 1 ) ( 5 x + 6 ) ( x + 7 ) } { ( 4 x + 5 ) ( x + 10 ) ( 5 - x ) } , x \neq - \frac { 5 } { 4 } , x \neq 5 , x \neq 6
B) (4x1)(5x6)(x10)(4x5)(x6)(7x),x65,x6,x7\frac { ( 4 x - 1 ) ( 5 x - 6 ) ( x - 10 ) } { ( 4 x - 5 ) ( x - 6 ) ( 7 - x ) } , x \neq \frac { 6 } { 5 } , x \neq 6 , x \neq 7
C) (4x+1)(5x+6)(x+6)(4x+5)(x+5)(10x),x14,x7,x10\frac { ( 4 x + 1 ) ( 5 x + 6 ) ( x + 6 ) } { ( 4 x + 5 ) ( x + 5 ) ( 10 - x ) } , x \neq \frac { 1 } { 4 } , x \neq 7 , x \neq 10
D) (4x1)(5x+6)(x+10)(4x+5)(x+7)(6x),x54,x6\frac { ( 4 x - 1 ) ( 5 x + 6 ) ( x + 10 ) } { ( 4 x + 5 ) ( x + 7 ) ( 6 - x ) } , x \neq - \frac { 5 } { 4 } , x \neq 6
E) (4x+1)(5x6)(x+5)(4x5)(x7)(10x),x14,x5,x7\frac { ( 4 x + 1 ) ( 5 x - 6 ) ( x + 5 ) } { ( 4 x - 5 ) ( x - 7 ) ( 10 - x ) } , x \neq - \frac { 1 } { 4 } , x \neq 5 , x \neq 7
Question
Fill in the missing factor. 4x(x8)2(x8)()=2xx8\frac { 4 x ( x - 8 ) ^ { 2 } } { ( x - 8 ) ( - ) } = \frac { 2 x } { x - 8 }

A) 2(x8)22 ( x - 8 ) ^ { 2 }
B) (x8)2( x - 8 ) ^ { 2 }
C) 4x(x8)4 x ( x - 8 )
D) 4(x8)4 ( x - 8 )
E) 4x(x8)24 x ( x - 8 ) ^ { 2 }
Question
Multiply and simplify. 27s825s15s7243s\frac { 27 s ^ { 8 } } { 25 s } \cdot \frac { 15 s ^ { 7 } } { 243 s }

A) s1315,s0\frac { s ^ { 13 } } { 15 } , s \neq 0
B) s143,s0\frac { s ^ { 14 } } { 3 } , s \neq 0
C) s1730,s0\frac { s ^ { 17 } } { 30 } , s \neq 0
D) s1610,s0\frac { s ^ { 16 } } { 10 } , s \neq 0
E) s135,s0\frac { s ^ { 13 } } { 5 } , s \neq 0
Question
Combine and simplify. 517x117x\frac { 5 } { 17 x } - \frac { 1 } { 17 x }

A) 617x- \frac { 6 } { 17 x }
B) 417x\frac { 4 } { 17 x }
C) 417x- \frac { 4 } { 17 x }
D) 117x\frac { 1 } { 17 x }
E) 617x\frac { 6 } { 17 x }
Question
Multiply and simplify. (x4y)2x+4yx2+10xy+24y2x216y2\frac { ( x - 4 y ) ^ { 2 } } { x + 4 y } \cdot \frac { x ^ { 2 } + 10 x y + 24 y ^ { 2 } } { x ^ { 2 } - 16 y ^ { 2 } }

A) (x+4y)(x6y)x4y,x±4y\frac { ( x + 4 y ) ( x - 6 y ) } { x - 4 y } , x \neq \pm 4 y
B) x4y,x6yx - 4 y , x \neq - 6 y
C) x+6y,x0x + 6 y , x \neq 0
D) (x4y)(x+6y)x+4y,x±4y\frac { ( x - 4 y ) ( x + 6 y ) } { x + 4 y } , x \neq \pm 4 y
E) (x6y)(x+6y)x+4y,x6y\frac { ( x - 6 y ) ( x + 6 y ) } { x + 4 y } , x \neq 6 y
Question
Divide and simplify. 7xy710u6v÷21x945u5v\frac { 7 x y ^ { 7 } } { 10 u ^ { 6 } v } \div \frac { 21 x ^ { 9 } } { 45 u ^ { 5 } v }

A) 2uv83ux7,v0\frac { 2 u v ^ { 8 } } { 3 u x ^ { 7 } } , v \neq 0
B) 3y72ux8,v0\frac { 3 y ^ { 7 } } { 2 u x ^ { 8 } } , v \neq 0
C) 7x8y775u5v2,v0\frac { 7 x ^ { 8 } y ^ { 7 } } { 75 u ^ { 5 } v ^ { 2 } } , v \neq 0
D) 49x8y7150u8v2,v0\frac { 49 x ^ { 8 } y ^ { 7 } } { 150 u ^ { 8 } v ^ { 2 } } , v \neq 0
E) 5v2y87x10,v0\frac { 5 v ^ { 2 } y ^ { 8 } } { 7 x ^ { 10 } } , v \neq 0
Question
Perform the operations and simplify. [x293(x+4)x2+7x]÷xx+7\left[ \frac { x ^ { 2 } } { 9 } \cdot \frac { 3 ( x + 4 ) } { x ^ { 2 } + 7 x } \right] \div \frac { x } { x + 7 }

A) x2(x+4)3(x+7)2,x3,x0\frac { x ^ { 2 } ( x + 4 ) } { 3 ( x + 7 ) ^ { 2 } } , x \neq - 3 , x \neq 0
B) x+74x,x4,x0\frac { x + 7 } { 4 x } , x \neq - 4 , x \neq 0
C) x2(x+4)x+7,x0,x3\frac { x ^ { 2 } ( x + 4 ) } { x + 7 } , x \neq 0 , x \neq 3
D) x+43,x7,x0\frac { x + 4 } { 3 } , x \neq - 7 , x \neq 0
E) 4(x+7)21,x0,x4\frac { 4 ( x + 7 ) } { 21 } , x \neq 0 , x \neq 4
Question
Multiply and simplify. 12u6v7u+vu+v18u5\frac { 12 u ^ { 6 } v } { 7 u + v } \cdot \frac { u + v } { 18 u ^ { 5 } }

A) 6uv7,u0\frac { 6 u v } { 7 } , u \neq 0
B) u+v7,u0\frac { u + v } { 7 } , u \neq 0
C) 2uv(u+v)3(7u+v),u0\frac { 2 u v ( u + v ) } { 3 ( 7 u + v ) } , u \neq 0
D) 2(u+v)3(7u+v),u0\frac { 2 ( u + v ) } { 3 ( 7 u + v ) } , u \neq 0
E) 67u+v,u0\frac { 6 } { 7 u + v } , u \neq 0
Question
Multiply and simplify. x+2x22x23x23x2+22x16x264x2+9x+14\frac { x + 2 } { x - 2 } \cdot \frac { 2 x ^ { 2 } - 3 x - 2 } { 3 x ^ { 2 } + 22 x - 16 } \cdot \frac { x ^ { 2 } - 64 } { x ^ { 2 } + 9 x + 14 }

A) (2x1)(x2)(3x+2)(x+8),x2,x±8\frac { ( 2 x - 1 ) ( x - 2 ) } { ( 3 x + 2 ) ( x + 8 ) } , x \neq - 2 , x \neq \pm 8
B) (2x+1)(x+7)(3x2)(x+2),x2,x23\frac { ( 2 x + 1 ) ( x + 7 ) } { ( 3 x - 2 ) ( x + 2 ) } , x \neq - 2 , x \neq \frac { 2 } { 3 }
C) (2x+1)(x+8)(3x+2)(x+2),x2,x23\frac { ( 2 x + 1 ) ( x + 8 ) } { ( 3 x + 2 ) ( x + 2 ) } , x \neq - 2 , x \neq - \frac { 2 } { 3 }
D) (2x+1)(x8)(3x2)(x+7),x8,x±2\frac { ( 2 x + 1 ) ( x - 8 ) } { ( 3 x - 2 ) ( x + 7 ) } , x \neq - 8 , x \neq \pm 2
E) (2x1)(x2)(3x2)(x+7),x7,x23\frac { ( 2 x - 1 ) ( x - 2 ) } { ( 3 x - 2 ) ( x + 7 ) } , x \neq - 7 , x \neq \frac { 2 } { 3 }
Question
A machine shop has a setup cost of $3900 for the production of a new product. The cost, C, of labor and material for producing each unit is $7.25. The average cost function for producing x units is given by Cˉ=C\bar { C } = C . Find Cˉ(130)\bar { C } ( 130 ) .

A)$37.25 per unit
B)$51.625 per unit
C)$23.625 per unit
D)$55.625 per unit
E)$22.625 per unit
Question
Multiply and simplify. (4x9)(x+9)x6x94x\frac { ( 4 x - 9 ) ( x + 9 ) } { x ^ { 6 } } \cdot \frac { x } { 9 - 4 x }

A) 32494x,x49\frac { 324 } { 9 - 4 x } , x \neq \frac { 4 } { 9 }
B) x9x6,x9\frac { x - 9 } { x ^ { 6 } } , x \neq - 9
C) x+9x5,x94- \frac { x + 9 } { x ^ { 5 } } , x \neq \frac { 9 } { 4 }
D) x+9x7,x49- \frac { x + 9 } { x ^ { 7 } } , x \neq - \frac { 4 } { 9 }
E) (4x9)(x+9)36,x94\frac { ( 4 x - 9 ) ( x + 9 ) } { 36 } , x \neq - \frac { 9 } { 4 }
Question
Multiply and simplify. 2t215t27t+5t24t45t218t+81\frac { 2 t ^ { 2 } - 15 t - 27 } { t + 5 } \cdot \frac { t ^ { 2 } - 4 t - 45 } { t ^ { 2 } - 18 t + 81 }

A) 2t+3,t5,t92 t + 3 , t \neq - 5 , t \neq 9
B) t9,t5,t9t - 9 , t \neq 5 , t \neq 9
C) 2t+3t9,t9\frac { 2 t + 3 } { t - 9 } , t \neq 9
D) t+5,t9,t5t + 5 , t \neq - 9 , t \neq 5
E) 2t+3t+5,t5\frac { 2 t + 3 } { t + 5 } , t \neq - 5
Question
Perform the operations and simplify. 3u2+17u28u6÷3u2+12u+4u84u7\frac { 3 u ^ { 2 } + 17 u - 28 } { u ^ { 6 } } \div \frac { 3 u ^ { 2 } + 12 u + 4 } { u ^ { 8 } - 4 u ^ { 7 } }

A) u+7u2,u0,u43,u4\frac { u + 7 } { u ^ { 2 } } , u \neq 0 , u \neq \frac { 4 } { 3 } , u \neq 4
B) u4u,u0\frac { u - 4 } { u } , u \neq 0
C) (u4)(u+7)u(u+1),u0\frac { ( u - 4 ) ( u + 7 ) } { u ( u + 1 ) } , u \neq 0
D) (3u4)(u4)u2(u+1),u7,u0\frac { ( 3 u - 4 ) ( u - 4 ) } { u ^ { 2 } ( u + 1 ) } , u \neq - 7 , u \neq 0
E) u(3u4)(u+7)(u4)3u2+12u+4,u0,u4\frac { u ( 3 u - 4 ) ( u + 7 ) ( u - 4 ) } { 3 u ^ { 2 } + 12 u + 4 } , u \neq 0 , u \neq 4
Question
Divide and simplify. x2+2x15x2+14x+45÷x28x+15x2+5x36\frac { x ^ { 2 } + 2 x - 15 } { x ^ { 2 } + 14 x + 45 } \div \frac { x ^ { 2 } - 8 x + 15 } { x ^ { 2 } + 5 x - 36 }

A) x+9x+4,x0,x3,x5\frac { x + 9 } { x + 4 } , x \neq 0 , x \neq 3 , x \neq 5
B) x+3x5,x9,x9,x5\frac { x + 3 } { x - 5 } , x \neq - 9 , x \neq - 9 , x \neq 5
C) x+3x9,x5,x0,x9\frac { x + 3 } { x - 9 } , x \neq - 5 , x \neq 0 , x \neq 9
D) x4x5,x9,x5,x3\frac { x - 4 } { x - 5 } , x \neq - 9 , x \neq - 5 , x \neq 3
E) x3x9,x5,x3,x9\frac { x - 3 } { x - 9 } , x \neq - 5 , x \neq - 3 , x \neq 9
Question
Multiply and simplify. 28+7x(72+63x)\frac { 2 } { 8 + 7 x } \cdot ( 72 + 63 x )

A) 14,x7814 , x \neq - \frac { 7 } { 8 }
B) 56,x7856 , x \neq \frac { 7 } { 8 }
C) 72,x8772 , x \neq \frac { 8 } { 7 }
D) 18,x8718 , x \neq - \frac { 8 } { 7 }
E) 16,x016 , x \neq 0
Question
Multiply and simplify. 4r55r4\frac { 4 - r } { 5 } \cdot \frac { 5 } { r - 4 }

A) 1,r4- 1 , r \neq 4
B) 45,r5- \frac { 4 } { 5 } , r \neq 5
C) 1,r41 , r \neq 4
D) 54,r5\frac { 5 } { 4 } , r \neq - 5
E) 15,r0\frac { 1 } { 5 } , r \neq 0
Question
Combine and simplify. 17x247x2\frac { 17 } { x ^ { 2 } - 4 } - \frac { 7 } { x - 2 }

A) 7x+2(x+2)(x2)\frac { 7 x + 2 } { ( x + 2 ) ( x - 2 ) }
B) 10x+2- \frac { 10 } { x + 2 }
C) 10x2\frac { 10 } { x - 2 }
D) 17x+2(x+2)(x2)\frac { 17 x + 2 } { ( x + 2 ) ( x - 2 ) }
E) 7x+3(x+2)(x2)\frac { - 7 x + 3 } { ( x + 2 ) ( x - 2 ) }
Question
The number of males M (in thousands)and the number of females F (in thousands)participating in high school athletic programs from 1995 through 2001 can be modeled by M=463.76t+2866.40.09t+1.0M = \frac { 463.76 t + 2866.4 } { 0.09 t + 1.0 } and F=3183.41t4762.2tF = \frac { 3183.41 t - 4762.2 } { t } . In these models, t represents the year, with t=5 corresponding to 1995. Find a rational model that represents the total number T of participants in high school athletic programs.

A) 2719.65t+1895.80.91t+1.0\frac { 2719.65 t + 1895.8 } { 0.91 t + 1.0 }
B) 750.27t2+5621.212t4762.2t(0.09t+1.0)\frac { 750.27 t ^ { 2 } + 5621.212 t - 4762.2 } { t ( 0.09 t + 1.0 ) }
C) 463.76t2+1895.8t7628.6t(0.09t+1.0)\frac { 463.76 t ^ { 2 } + 1895.8 t - 7628.6 } { t ( 0.09 t + 1.0 ) }
D) 3647.17t7628.61.09t+1.0\frac { 3647.17 t - 7628.6 } { 1.09 t + 1.0 }
E) 3183.41t2+7628.6t1895.8t(0.09t+1.0)\frac { 3183.41 t ^ { 2 } + 7628.6 t - 1895.8 } { t ( 0.09 t + 1.0 ) }
Question
Find the least common denominator of the two fractions n+25n30,1010n2\frac { n + 2 } { 5 n - 30 } , \frac { 10 } { 10 n ^ { 2 } } and rewrite each fraction using the least common denominator.

A) n2(n+2)10n2(n6),(n6)10n2(n6)\frac { n ^ { 2 } ( n + 2 ) } { 10 n ^ { 2 } ( n - 6 ) } , \frac { ( n - 6 ) } { 10 n ^ { 2 } ( n - 6 ) }
B) 2n2(n+2)10n2(n6),10(n6)10n2(n6)\frac { 2 n ^ { 2 } ( n + 2 ) } { 10 n ^ { 2 } ( n - 6 ) } , \frac { 10 ( n - 6 ) } { 10 n ^ { 2 } ( n - 6 ) }
C) 2n2(n+2)5n2(n6),10(n6)5n2(n6)\frac { 2 n ^ { 2 } ( n + 2 ) } { 5 n ^ { 2 } ( n - 6 ) } , \frac { 10 ( n - 6 ) } { 5 n ^ { 2 } ( n - 6 ) }
D) 5n2(n+2)2n2(n6),10(n6)2n2(n6)\frac { 5 n ^ { 2 } ( n + 2 ) } { 2 n ^ { 2 } ( n - 6 ) } , \frac { 10 ( n - 6 ) } { 2 n ^ { 2 } ( n - 6 ) }
E) (n+2)2n2(n6),(n6)2n2(n6)\frac { ( n + 2 ) } { 2 n ^ { 2 } ( n - 6 ) } , \frac { ( n - 6 ) } { 2 n ^ { 2 } ( n - 6 ) }
Question
Combine and simplify. 2y132y213513\frac { 2 y } { 13 } - \frac { 2 y - 2 } { 13 } - \frac { 5 } { 13 }

A) 213- \frac { 2 } { 13 }
B) 513- \frac { 5 } { 13 }
C) 313- \frac { 3 } { 13 }
D) 313\frac { 3 } { 13 }
E) 513\frac { 5 } { 13 }
Question
Combine and simplify. 18+z7z15z7z\frac { 18 + z } { 7 z } - \frac { 15 - z } { 7 z }

A) 332z7z\frac { 33 - 2 z } { 7 z }
B) 37z\frac { 3 } { 7 z }
C) 3+2z7z\frac { 3 + 2 z } { 7 z }
D) 33+2z7z\frac { 33 + 2 z } { 7 z }
E) 337z\frac { 33 } { 7 z }
Question
Simplify the complex fraction. (6x5(5y)2)((3x)215y4)\frac { \left( \frac { 6 x ^ { 5 } } { ( 5 y ) ^ { 2 } } \right) } { \left( \frac { ( 3 x ) ^ { 2 } } { 15 y ^ { 4 } } \right) }

A) 3x6y610,x0,y0\frac { 3 x ^ { 6 } y ^ { 6 } } { 10 } , x \neq 0 , y \neq 0
B) 3x4y32,x0,y0\frac { 3 x ^ { 4 } y ^ { 3 } } { 2 } , x \neq 0 , y \neq 0
C) 5x5y53,x0,y0\frac { 5 x ^ { 5 } y ^ { 5 } } { 3 } , x \neq 0 , y \neq 0
D) 2x3y25,x0,y0\frac { 2 x ^ { 3 } y ^ { 2 } } { 5 } , x \neq 0 , y \neq 0
E) 5x7y46,x0,y0\frac { 5 x ^ { 7 } y ^ { 4 } } { 6 } , x \neq 0 , y \neq 0
Question
Combine and simplify. 6yx2+xy6xxy+y2\frac { 6 y } { x ^ { 2 } + x y } - \frac { 6 x } { x y + y ^ { 2 } }

A) 6(x+y)xy,xy\frac { 6 ( x + y ) } { x - y } , x \neq y
B) 6(yx)xy,xy\frac { 6 ( y - x ) } { x y } , x \neq - y
C) 6(xy)x+y,xy\frac { 6 ( x - y ) } { x + y } , x \neq - y
D) 6(xy)xy,xy\frac { 6 ( x - y ) } { x y } , x \neq y
E) 6(x+y)xy(xy),xy\frac { 6 ( x + y ) } { x y ( x - y ) } , x \neq - y
Question
Combine and simplify. 2xx10910x\frac { 2 x } { x - 10 } - \frac { 9 } { 10 - x }

A) 2x92x\frac { 2 x - 9 } { 2 x }
B) 18x10x\frac { 18 x } { 10 - x }
C) 2x+910x\frac { 2 x + 9 } { 10 - x }
D) 2x92(x10)\frac { 2 x - 9 } { 2 ( x - 10 ) }
E) 2x+9x10\frac { 2 x + 9 } { x - 10 }
Question
Fill in the missing factor. (2t+3)()6t2(2t3)=2t+32t,t32\frac { ( 2 t + 3 ) ( - ) } { 6 t ^ { 2 } ( 2 t - 3 ) } = \frac { 2 t + 3 } { 2 t } , t \neq \frac { 3 } { 2 }

A) 2t(13t)2 t ( 1 - 3 t )
B) 3t(2t1)3 t ( 2 t - 1 )
C) 3t(2t3)3 t ( 2 t - 3 )
D) 3t(2t+3)3 t ( 2 t + 3 )
E) 2t(3t+1)2 t ( 3 t + 1 )
Question
Combine and simplify. 132+4x4x+1\frac { 13 } { 2 } + \frac { 4 } { x } - \frac { 4 } { x + 1 }

A) 13x+212x(x+1)\frac { 13 x + 21 } { 2 x ( x + 1 ) }
B) 13x2+17x+42x(x+1)\frac { 13 x ^ { 2 } + 17 x + 4 } { 2 x ( x + 1 ) }
C) 212x(x+1)\frac { 21 } { 2 x ( x + 1 ) }
D) 13x2+13x+82x(x+1)\frac { 13 x ^ { 2 } + 13 x + 8 } { 2 x ( x + 1 ) }
E) 13x+172x(x+1)\frac { 13 x + 17 } { 2 x ( x + 1 ) }
Question
Find the least common multiple of the expressions. 5y2+9y2,15y23y5 y ^ { 2 } + 9 y - 2,15 y ^ { 2 } - 3 y

A) 3y(y+2)(5y1)3 y ( y + 2 ) ( 5 y - 1 )
B) 20y2+6y220 y ^ { 2 } + 6 y - 2
C) (5y1)(y+2)( 5 y - 1 ) ( y + 2 )
D) 3y(5y1)3 y ( 5 y - 1 )
E) 75y2+27y275 y ^ { 2 } + 27 y - 2
Question
Find the least common multiple of the expressions. 12x5,4(x+2)12 x ^ { 5 } , 4 ( x + 2 )

A) 12x5(x+2)12 x ^ { 5 } ( x + 2 )
B) 48x5(x+2)48 x ^ { 5 } ( x + 2 )
C) 24x624 x ^ { 6 }
D) 4x5(x+2)4 x ^ { 5 } ( x + 2 )
E) 3x5(x+2)3 x ^ { 5 } ( x + 2 )
Question
Simplify the complex fraction. (x645)(7x75)\frac { \left( \frac { x ^ { 6 } } { 45 } \right) } { \left( \frac { 7 x } { 75 } \right) }

A) 3x75,x0\frac { 3 x ^ { 7 } } { 5 } , x \neq 0
B) 5x77,x0\frac { 5 x ^ { 7 } } { 7 } , x \neq 0
C) 5x521,x0\frac { 5 x ^ { 5 } } { 21 } , x \neq 0
D) 3x535,x0\frac { 3 x ^ { 5 } } { 35 } , x \neq 0
E) 7x515,x0\frac { 7 x ^ { 5 } } { 15 } , x \neq 0
Question
Combine and simplify. xx+43x7\frac { x } { x + 4 } - \frac { 3 } { x - 7 }

A) x210x12(x+4)(x7)\frac { x ^ { 2 } - 10 x - 12 } { ( x + 4 ) ( x - 7 ) }
B) x(x11)(x+3)\frac { x ( x - 11 ) } { ( x + 3 ) }
C) x(x7)(x+7)(x4)\frac { x ( x - 7 ) } { ( x + 7 ) ( x - 4 ) }
D) x27(x+3)(x4)\frac { x ^ { 2 } - 7 } { ( x + 3 ) ( x - 4 ) }
E) x3(x+4)(x7)\frac { x - 3 } { ( x + 4 ) ( x - 7 ) }
Question
Combine and simplify. 102x3+72x+3\frac { 10 } { 2 x - 3 } + \frac { 7 } { 2 x + 3 }

A) 34x+9(2x3)(2x+3)\frac { 34 x + 9 } { ( 2 x - 3 ) ( 2 x + 3 ) }
B) 2(x+7)(2x3)(2x+3)\frac { 2 ( x + 7 ) } { ( 2 x - 3 ) ( 2 x + 3 ) }
C) 20x21(2x3)(2x+3)\frac { 20 x - 21 } { ( 2 x - 3 ) ( 2 x + 3 ) }
D) 174x\frac { 17 } { 4 x }
E) 17(2x3)(2x+3)\frac { 17 } { ( 2 x - 3 ) ( 2 x + 3 ) }
Question
Combine and simplify. 3b+110b\frac { 3 } { b } + \frac { 1 } { 10 b }

A) 3111b\frac { 31 } { 11 b }
B) b+3010b\frac { b + 30 } { 10 b }
C) 3110b\frac { 31 } { 10 b }
D) 310b2\frac { 3 } { 10 b ^ { 2 } }
E) 411b\frac { 4 } { 11 b }
Question
Combine and simplify. 7x10x(x12)+15xx(x12)\frac { 7 x - 10 } { x ( x - 12 ) } + \frac { 15 - x } { x ( x - 12 ) }

A) 17x3x(x12)\frac { 17 x - 3 } { x ( x - 12 ) }
B) 8x+25x(x12)\frac { 8 x + 25 } { x ( x - 12 ) }
C) 6x+5x(x12)\frac { 6 x + 5 } { x ( x - 12 ) }
D) 7x+15x(x12)\frac { 7 x + 15 } { x ( x - 12 ) }
E) 22x+7x(x12)\frac { 22 x + 7 } { x ( x - 12 ) }
Question
Combine and simplify. x+2x12x+920x2+8x9\frac { x + 2 } { x - 1 } - \frac { 2 } { x + 9 } - \frac { 20 } { x ^ { 2 } + 8 x - 9 }

A) x+9x+8,x9\frac { x + 9 } { x + 8 } , x \neq 9
B) x1x+9,x9\frac { x - 1 } { x + 9 } , x \neq - 9
C) x(x9)(x1)(x+9),x9\frac { x ( x - 9 ) } { ( x - 1 ) ( x + 9 ) } , x \neq 9
D) xx1,x9\frac { x } { x - 1 } , x \neq - 9
E) x20(x1)(x+9),x9\frac { x - 20 } { ( x - 1 ) ( x + 9 ) } , x \neq - 9
Question
Combine and simplify. xx249+4x210x+21\frac { x } { x ^ { 2 } - 49 } + \frac { 4 } { x ^ { 2 } - 10 x + 21 }

A) x+4(x+7)(x7)\frac { x + 4 } { ( x + 7 ) ( x - 7 ) }
B) x2+x+4(x+7)(x7)\frac { x ^ { 2 } + x + 4 } { ( x + 7 ) ( x - 7 ) }
C) x2+x+28(x+7)(x7)(x3)\frac { x ^ { 2 } + x + 28 } { ( x + 7 ) ( x - 7 ) ( x - 3 ) }
D) x2+3x+12(x+7)(x7)(x3)\frac { x ^ { 2 } + 3 x + 12 } { ( x + 7 ) ( x - 7 ) ( x - 3 ) }
E) x2+4x+21(x+7)(x7)(x3)\frac { x ^ { 2 } + 4 x + 21 } { ( x + 7 ) ( x - 7 ) ( x - 3 ) }
Question
Combine and simplify. 2x2x3+332x\frac { 2 x } { 2 x - 3 } + \frac { 3 } { 3 - 2 x }

A)1, x32x \neq \frac { 3 } { 2 }
B) 12x+3,x32- \frac { 1 } { 2 x + 3 } , x \neq - \frac { 3 } { 2 }
C) 2x+3,x32 x + 3 , x \neq 3
D) 2x+32x3,x32\frac { 2 x + 3 } { 2 x - 3 } , x \neq \frac { 3 } { 2 }
E) 2x3,x22 x - 3 , x \neq 2
Question
Simplify the complex fraction. (6x211x107x2+7x)(2x57x+1)\frac { \left( \frac { 6 x ^ { 2 } - 11 x - 10 } { 7 x ^ { 2 } + 7 x } \right) } { \left( \frac { 2 x - 5 } { 7 x + 1 } \right) }

A) 3x+2x,x52\frac { 3 x + 2 } { x } , x \neq - \frac { 5 } { 2 }
B) 7(x+1)x(3x+2),x52\frac { 7 ( x + 1 ) } { x ( 3 x + 2 ) } , x \neq - \frac { 5 } { 2 }
C) (3x+2)(7x+1)7x(x+1),x52\frac { ( 3 x + 2 ) ( 7 x + 1 ) } { 7 x ( x + 1 ) } , x \neq \frac { 5 } { 2 }
D) (3x+2)(x+1)x(7x+1),x52\frac { ( 3 x + 2 ) ( x + 1 ) } { x ( 7 x + 1 ) } , x \neq \frac { 5 } { 2 }
E) 7x+17x,x52\frac { 7 x + 1 } { 7 x } , x \neq \frac { 5 } { 2 }
Question
Simplify the complex fraction. (x2+5x36x+6)3x12\frac { \left( \frac { x ^ { 2 } + 5 x - 36 } { x + 6 } \right) } { 3 x - 12 }

A) x+93(x+6),x4\frac { x + 9 } { 3 ( x + 6 ) } , x \neq 4
B) x93(x+6),x4\frac { x - 9 } { 3 ( x + 6 ) } , x \neq - 4
C) x43(x9),x4\frac { x - 4 } { 3 ( x - 9 ) } , x \neq - 4
D) x+63(x4),x4\frac { x + 6 } { 3 ( x - 4 ) } , x \neq 4
E) x+43(x+9),x4\frac { x + 4 } { 3 ( x + 9 ) } , x \neq 4
Question
Simplify the complex fraction. (4x2x2)(14x187xx2)\frac { \left( \frac { 4 x ^ { 2 } } { x - 2 } \right) } { \left( \frac { 14 x } { 18 - 7 x - x ^ { 2 } } \right) }

A) x+92,x7,x0,x9- \frac { x + 9 } { 2 } , x \neq - 7 , x \neq 0 , x \neq 9
B) 2x(x+9)7,x9,x0,x2- \frac { 2 x ( x + 9 ) } { 7 } , x \neq - 9 , x \neq 0 , x \neq 2
C) 9x7,x2,x0,x7\frac { 9 - x } { 7 } , x \neq - 2 , x \neq 0 , x \neq 7
D) 7x(x9)2,x9,x2,x0\frac { 7 x ( x - 9 ) } { 2 } , x \neq - 9 , x \neq - 2 , x \neq 0
E) 4x(9x)7,x0,x7,x9\frac { 4 x ( 9 - x ) } { 7 } , x \neq 0 , x \neq 7 , x \neq 9
Question
Simplify the complex fraction. 64x2144x+81x2+10x+25÷16x210x92x2+3x35\frac { 64 x ^ { 2 } - 144 x + 81 } { x ^ { 2 } + 10 x + 25 } \div \frac { 16 x ^ { 2 } - 10 x - 9 } { 2 x ^ { 2 } + 3 x - 35 }

A) 2(8x+9)x9,x98,x0\frac { 2 ( 8 x + 9 ) } { x - 9 } , x \neq - \frac { 9 } { 8 } , x \neq 0
B) (x5)(8x1)(x+9)(2x+1),x5,x18\frac { ( x - 5 ) ( 8 x - 1 ) } { ( x + 9 ) ( 2 x + 1 ) } , x \neq 5 , x \neq \frac { 1 } { 8 }
C) (8x9)(2x7)(x+5)(2x+1),x98,x72\frac { ( 8 x - 9 ) ( 2 x - 7 ) } { ( x + 5 ) ( 2 x + 1 ) } , x \neq \frac { 9 } { 8 } , x \neq \frac { 7 } { 2 }
D) (x9)(2x+1)(8x9)(2x1),x9,x12\frac { ( x - 9 ) ( 2 x + 1 ) } { ( 8 x - 9 ) ( 2 x - 1 ) } , x \neq 9 , x \neq \frac { 1 } { 2 }
E) 7(8x9)x+5,x89,x0- \frac { 7 ( 8 x - 9 ) } { x + 5 } , x \neq - \frac { 8 } { 9 } , x \neq 0
Question
Simplify the complex fraction. (16x)x6\frac { \left( 1 - \frac { 6 } { x } \right) } { \frac { x } { 6 } }

A) 6x\frac { 6 } { x }
B) -1
C) 36x- \frac { 36 } { x }
D) x6\frac { x } { 6 }
E) 6(x6)x2\frac { 6 ( x - 6 ) } { x ^ { 2 } }
Question
Simplify the expression. 7yy13y2\frac { 7 y - y ^ { - 1 } } { 3 - y ^ { - 2 } }

A) y(7y21)3y21,y0\frac { y \left( 7 y ^ { 2 } - 1 \right) } { 3 y ^ { 2 } - 1 } , y \neq 0
B) 6y23y21,y0\frac { 6 y ^ { 2 } } { 3 y ^ { 2 } - 1 } , y \neq 0
C) 3y7y1,y0\frac { 3 y } { 7 y - 1 } , y \neq 0
D) 2y23y21,y0\frac { 2 y ^ { 2 } } { 3 y ^ { 2 } - 1 } , y \neq 0
E) 7y3y1,y0\frac { 7 y } { 3 y - 1 } , y \neq 0
Question
Simplify the complex fraction. (xx1)(x1x)\frac { \left( \frac { x } { x - 1 } \right) } { \left( \frac { x } { 1 - x } \right) }

A) 1x1,x0,x1\frac { 1 } { x - 1 } , x \neq 0 , x \neq 1
B) 11x,x0,x1\frac { 1 } { 1 - x } , x \neq 0 , x \neq 1
C) 1,x0,x1- 1 , x \neq 0 , x \neq 1
D) 1,x0,x11 , x \neq 0 , x \neq 1
E) 2,x0,x12 , x \neq 0 , x \neq 1
Question
Perform the division. x217x+70x7\frac { x ^ { 2 } - 17 x + 70 } { x - 7 }

A) x7,x7x - 7 , x \neq 7
B) x+17+100x7,x7x + 17 + \frac { 100 } { x - 7 } , x \neq - 7
C) x+70x7,x7x + \frac { 70 } { x - 7 } , x \neq 7
D) x10,x7x - 10 , x \neq 7
E) x3+49x7,x7x - 3 + \frac { 49 } { x - 7 } , x \neq - 7
Question
Determine the average of the two real numbers 3x5\frac { 3 x } { 5 } and 5x9\frac { 5 x } { 9 } .

A) 16x9\frac { 16 x } { 9 }
B) 26x45\frac { 26 x } { 45 }
C) 52x45\frac { 52 x } { 45 }
D) 2x7\frac { 2 x } { 7 }
E) 4x5\frac { 4 x } { 5 }
Question
Simplify the complex fraction. (4x+9)(4x9)\frac { \left( \frac { 4 } { x } + 9 \right) } { \left( \frac { 4 } { x } - 9 \right) }

A) 4x+94x9,x0\frac { 4 x + 9 } { 4 x - 9 } , x \neq 0
B) 9x44x9,x0\frac { 9 x - 4 } { 4 x - 9 } , x \neq 0
C) 9x+44,x0\frac { 9 x + 4 } { 4 } , x \neq 0
D) 9x+449x,x0\frac { 9 x + 4 } { 4 - 9 x } , x \neq 0
E) 1,x0- 1 , x \neq 0
Question
Simplify the complex fraction. (1+7y)\left( 1 + \frac { 7 } { y } \right)
yy

A) y+7y2\frac { y + 7 } { y ^ { 2 } }
B) 7y+17 y + 1
C) 8
D) 8y
E) yy+7\frac { y } { y + 7 }
Question
Simplify the complex fraction. (8+64x8)(9+72x8)\frac { \left( 8 + \frac { 64 } { x - 8 } \right) } { \left( 9 + \frac { 72 } { x - 8 } \right) }

A) 8x8,x64,x0- \frac { - 8 } { x - 8 } , x \neq 64 , x \neq 0
B) 881,x8,x9\frac { 8 } { 81 } , x \neq 8 , x \neq 9
C) 9x8,x81,x8\frac { 9 } { x - 8 } , x \neq 81 , x \neq 8
D) 649,x0,x9\frac { 64 } { 9 } , x \neq 0 , x \neq 9
E) 89,x0,x8\frac { 8 } { 9 } , x \neq 0 , x \neq 8
Question
Perform the division. 6z3+7z22z2z\frac { 6 z ^ { 3 } + 7 z ^ { 2 } - 2 z } { 2 z }

A) 3z2+7z21,z03 z ^ { 2 } + \frac { 7 z } { 2 } - 1 , z \neq 0
B) 6z3+7z2,z06 z ^ { 3 } + 7 z ^ { 2 } , z \neq 0
C) 13z222z,z0\frac { 13 z ^ { 2 } } { 2 } - 2 z , z \neq 0
D) 6z3+5z2,z06 z ^ { 3 } + \frac { 5 z } { 2 } , z \neq 0
E) 10z22z,z010 z ^ { 2 } - 2 z , z \neq 0
Question
Simplify the complex fraction. (yxxy)(x+y5xy)\frac { \left( \frac { y } { x } - \frac { x } { y } \right) } { \left( \frac { x + y } { 5 x y } \right) }

A) 5x+y,x0,y0,xy\frac { 5 } { x + y } , x \neq 0 , y \neq 0 , x \neq - y
B) 5(x+y)xy,x0,y0,xy\frac { 5 ( x + y ) } { x - y } , x \neq 0 , y \neq 0 , x \neq y
C) yx5,x0,y0,xy\frac { y - x } { 5 } , x \neq 0 , y \neq 0 , x \neq y
D) 5xyx+y,x0,y0,xy\frac { 5 x y } { x + y } , x \neq 0 , y \neq 0 , x \neq - y
E) 5(yx),x0,y0,xy5 ( y - x ) , x \neq 0 , y \neq 0 , x \neq - y
Question
Simplify the complex fraction. (3x+5)(12x+10+7x+5)\frac { \left( \frac { 3 } { x + 5 } \right) } { \left( \frac { 1 } { 2 x + 10 } + \frac { 7 } { x + 5 } \right) }

A) 21x+5,x5\frac { 21 } { x + 5 } , x \neq 5
B) 67,x5\frac { 6 } { 7 } , x \neq 5
C) x+535,x5\frac { x + 5 } { 35 } , x \neq - 5
D) 37(x+5),x5\frac { 3 } { 7 ( x + 5 ) } , x \neq - 5
E) 615,x5\frac { 6 } { 15 } , x \neq - 5
Question
Simplify the complex fraction. (x214x+45x210x+25)(16+6xx2x23x40)\frac { \left( \frac { x ^ { 2 } - 14 x + 45 } { x ^ { 2 } - 10 x + 25 } \right) } { \left( \frac { 16 + 6 x - x ^ { 2 } } { x ^ { 2 } - 3 x - 40 } \right) }

A) (x9)(x+5)x8,x9,x5\frac { ( x - 9 ) ( x + 5 ) } { x - 8 } , x \neq - 9 , x \neq 5
B) (5x)(x+2)(x8)(x+9),x2,x9\frac { ( 5 - x ) ( x + 2 ) } { ( x - 8 ) ( x + 9 ) } , x \neq - 2 , x \neq 9
C) x+8x5,x8,x2\frac { x + 8 } { x - 5 } , x \neq - 8 , x \neq 2
D) x9x+2,x5,x9\frac { x - 9 } { x + 2 } , x \neq 5 , x \neq 9
E) (9x)(x+5)(x5)(x+2),x5,x8\frac { ( 9 - x ) ( x + 5 ) } { ( x - 5 ) ( x + 2 ) } , x \neq - 5 , x \neq 8
Question
Perform the division. (x2+19x+90)÷(x+9)\left( x ^ { 2 } + 19 x + 90 \right) \div ( x + 9 )

A) x+19+9x+9,x9x + 19 + \frac { 9 } { x + 9 } , x \neq - 9
B) x+9,x9x + 9 , x \neq 9
C) x+90x+9,x9x + \frac { 90 } { x + 9 } , x \neq - 9
D) x1+100x+9,x9x - 1 + \frac { 100 } { x + 9 } , x \neq 9
E) x+10,x9x + 10 , x \neq - 9
Question
Simplify the complex fraction. (10x20x+8)(x2x+8)\frac { \left( \frac { 10 x - 20 } { x + 8 } \right) } { \left( \frac { x - 2 } { x + 8 } \right) }

A) 8,x2,x108 , x \neq - 2 , x \neq 10
B) 2,x10,x82 , x \neq - 10 , x \neq 8
C) 10,x8,x210 , x \neq - 8 , x \neq 2
D) 1,x0,x8- 1 , x \neq 0 , x \neq 8
E) 1,x0,x21 , x \neq 0 , x \neq 2
Question
Simplify the expression. 9x1+9y1x1y1\frac { 9 x ^ { - 1 } + 9 y ^ { - 1 } } { x ^ { - 1 } - y ^ { - 1 } }

A) 18,x0,y0- 18 , x \neq 0 , y \neq 0
B) x+y9xy,x0,y0\frac { x + y } { 9 x y } , x \neq 0 , y \neq 0
C) xy9(x+y),x0,y0\frac { x y } { 9 ( x + y ) } , x \neq 0 , y \neq 0
D) 9(x+y)yx,x0,y0\frac { 9 ( x + y ) } { y - x } , x \neq 0 , y \neq 0
E) 9(xy)xy,x0,y0\frac { 9 ( x - y ) } { x y } , x \neq 0 , y \neq 0
Question
Use the function f(x)=1xf ( x ) = \frac { 1 } { x } to find and simplify the expression for f(14+h)f(14)h\frac { f ( 14 + h ) - f ( 14 ) } { h } .

A) 114(h+14),h0- \frac { 1 } { 14 ( h + 14 ) } , h \neq 0
B) 14h(h+14),h0- \frac { 14 h } { ( h + 14 ) } , h \neq 0
C) h14(h+14),h0- \frac { h } { 14 ( h + 14 ) } , h \neq 0
D) 114(h+14),h0\frac { 1 } { 14 ( h + 14 ) } , h \neq 0
E) 1(h+14),h0- \frac { 1 } { ( h + 14 ) } , h \neq 0
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Deck 6: Rational Expressions, Equations, and Functions
1
Simplify the rational expression. 6x10x60\frac { 6 - x } { 10 x - 60 }

A) 14,x6- \frac { 1 } { 4 } , x \neq 6
B) 110,x6- \frac { 1 } { 10 } , x \neq 6
C) 6,x66 , x \neq 6
D) 10,x610 , x \neq 6
E) 16,x6\frac { 1 } { 6 } , x \neq 6
110,x6- \frac { 1 } { 10 } , x \neq 6
2
The average cost Cˉ\bar C for a manufacturer to produce x units of a product is given by Cˉ=1.25x+3510x\bar { C } = \frac { 1.25 x + 3510 } { x } . Describe the domain.

A)all x>0x > 0
B)all x>1.25x > 1.25
C)all x3510x \neq 3510
D)all integers >0> 0
E)all x0x \neq 0
all integers >0> 0
3
Find the domain of the rational function. f(y)=y10y(y+2)f ( y ) = \frac { y - 10 } { y ( y + 2 ) }

A) (,10)(10,)( - \infty , 10 ) \cup ( 10 , \infty )
B) (,2)(2,10)(10,)( - \infty , - 2 ) \cup ( - 2,10 ) \cup ( 10 , \infty )
C) (,2)(2,)( - \infty , - 2 ) \cup ( - 2 , \infty )
D) (,)( - \infty , \infty )
E) (,2)(2,0)(0,)( - \infty , - 2 ) \cup ( - 2,0 ) \cup ( 0 , \infty )
(,2)(2,0)(0,)( - \infty , - 2 ) \cup ( - 2,0 ) \cup ( 0 , \infty )
4
Simplify the rational expression. x2+8xy9y2x2+10xy+9y2\frac { x ^ { 2 } + 8 x y - 9 y ^ { 2 } } { x ^ { 2 } + 10 x y + 9 y ^ { 2 } }

A) xyx+y,x9y\frac { x - y } { x + y } , x \neq - 9 y
B) xyx+9y,xy\frac { x - y } { x + 9 y } , x \neq y
C) x+yx9y,x9y\frac { x + y } { x - 9 y } , x \neq 9 y
D) x+9yx+y,xy\frac { x + 9 y } { x + y } , x \neq - y
E) x9yx+9y,x9y\frac { x - 9 y } { x + 9 y } , x \neq - 9 y
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5
Simplify the rational expression. y39yy2+5y24\frac { y ^ { 3 } - 9 y } { y ^ { 2 } + 5 y - 24 }

A) y3y8,y8\frac { y - 3 } { y - 8 } , y \neq 8
B) y+38,y8,y3\frac { y + 3 } { 8 } , y \neq - 8 , y \neq 3
C) y(y+3)y+8,y3\frac { y ( y + 3 ) } { y + 8 } , y \neq 3
D) y918,y0,y8- \frac { y - 9 } { 18 } , y \neq 0 , y \neq 8
E) y3y+3,y3\frac { y - 3 } { y + 3 } , y \neq - 3
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6
Find the domain of the rational function. f(x)=x2+46f ( x ) = \frac { x ^ { 2 } + 4 } { 6 }

A) (,)( - \infty , \infty )
B) (,4)(4,6)(6,)( - \infty , 4 ) \cup ( 4,6 ) \cup ( 6 , \infty )
C) (,4)(4,4)(4,)( - \infty , - 4 ) \cup ( - 4,4 ) \cup ( 4 , \infty )
D) (,6)(6,)( - \infty , 6 ) \cup ( 6 , \infty )
E) (,4)(4,)( - \infty , 4 ) \cup ( 4 , \infty )
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7
Simplify the rational expression. 7xy2xy2+x\frac { 7 x y ^ { 2 } } { x y ^ { 2 } + x }

A) 7x+1,x1\frac { 7 } { x + 1 } , x \neq - 1
B) 7y2xy2+1,y0\frac { 7 y ^ { 2 } } { x y ^ { 2 } + 1 } , y \neq 0
C) 7y2y2+1,x0\frac { 7 y ^ { 2 } } { y ^ { 2 } + 1 } , x \neq 0
D) 7y2y2+x,y0\frac { 7 y ^ { 2 } } { y ^ { 2 } + x } , y \neq 0
E) 7x,x0\frac { 7 } { x } , x \neq 0
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8
Simplify the rational expression. 3xy+5x2y2xy4\frac { 3 x y + 5 x ^ { 2 } y ^ { 2 } } { x y ^ { 4 } }

A) 3x+5yy3,x0,y0\frac { 3 x + 5 y } { y ^ { 3 } } , x \neq 0 , y \neq 0
B) 3y+5x2y2,x0,y0\frac { 3 y + 5 x ^ { 2 } } { y ^ { 2 } } , x \neq 0 , y \neq 0
C) 3+5x2y2y3,y0\frac { 3 + 5 x ^ { 2 } y ^ { 2 } } { y ^ { 3 } } , y \neq 0
D) x(3y+5)y2,y0\frac { x ( 3 y + 5 ) } { y ^ { 2 } } , y \neq 0
E) 3+5xyy3,x0,y0\frac { 3 + 5 x y } { y ^ { 3 } } , x \neq 0 , y \neq 0
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9
Find the domain of the rational function. h(t)=10t2t24t45h ( t ) = \frac { 10 t ^ { 2 } } { t ^ { 2 } - 4 t - 45 }

A) (,0)(0,)( - \infty , 0 ) \cup ( 0 , \infty )
B) (,)( - \infty , \infty )
C) (,5)(5,0)(0,)( - \infty , - 5 ) \cup ( - 5,0 ) \cup ( 0 , \infty )
D) (,0)(0,9)(9,)( - \infty , 0 ) \cup ( 0,9 ) \cup ( 9 , \infty )
E) (,5)(5,9)(9,)( - \infty , - 5 ) \cup ( - 5,9 ) \cup ( 9 , \infty )
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10
Simplify the rational expression. 30x2+11x7100x249\frac { 30 x ^ { 2 } + 11 x - 7 } { 100 x ^ { 2 } - 49 }

A) 3x110x+7,x107\frac { 3 x - 1 } { 10 x + 7 } , x \neq \frac { 10 } { 7 }
B) 10x73,x0\frac { 10 x - 7 } { 3 } , x \neq 0
C) 710x3,x0\frac { 7 - 10 x } { 3 } , x \neq 0
D) 10x+710x7,x710\frac { 10 x + 7 } { 10 x - 7 } , x \neq \frac { 7 } { 10 }
E) 3x110x7,x710\frac { 3 x - 1 } { 10 x - 7 } , x \neq \frac { 7 } { 10 }
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11
Find the domain of the rational function. f(x)=9x5f ( x ) = \frac { 9 } { x - 5 }

A) (,5)(5,)( - \infty , 5 ) \cup ( 5 , \infty )
B) (,9)(9,)( - \infty , 9 ) \cup ( 9 , \infty )
C) (,5)(5,5)(5,)( - \infty , - 5 ) \cup ( - 5,5 ) \cup ( 5 , \infty )
D) (,)( - \infty , \infty )
E) (,5)(5,9)(9,)( - \infty , 5 ) \cup ( 5,9 ) \cup ( 9 , \infty )
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12
Find the domain of the rational function. f(x)=xx281f ( x ) = \frac { x } { x ^ { 2 } - 81 }

A) (,0)(0,9)(9,)( - \infty , 0 ) \cup ( 0,9 ) \cup ( 9 , \infty )
B) (,9)(9,9)(9,)( - \infty , - 9 ) \cup ( - 9,9 ) \cup ( 9 , \infty )
C) (,9)(9,)( - \infty , 9 ) \cup ( 9 , \infty )
D) (,0)(0,)( - \infty , 0 ) \cup ( 0 , \infty )
E) (,)( - \infty , \infty )
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13
Find the domain of the rational function. h(x)=6xx2+4h ( x ) = \frac { 6 x } { x ^ { 2 } + 4 }

A) (,2)(2,2)(2,)( - \infty , - 2 ) \cup ( - 2,2 ) \cup ( 2 , \infty )
B) (,)( - \infty , \infty )
C) (,6)(6,)( - \infty , 6 ) \cup ( 6 , \infty )
D) (,2)(2,6)(6,)( - \infty , 2 ) \cup ( 2,6 ) \cup ( 6 , \infty )
E) (,0)(0,)( - \infty , 0 ) \cup ( 0 , \infty )
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14
Simplify the rational expression. 3x210x25403xx2\frac { 3 x ^ { 2 } - 10 x - 25 } { 40 - 3 x - x ^ { 2 } }

A) x+5x5,x8\frac { x + 5 } { x - 5 } , x \neq 8
B) 3x+5x+8,x5- \frac { 3 x + 5 } { x + 8 } , x \neq 5
C) x3537x,x0\frac { x - 35 } { 37 - x } , x \neq 0
D) 3x+5x5,x5- \frac { 3 x + 5 } { x - 5 } , x \neq - 5
E) x5x+8,x8\frac { x - 5 } { x + 8 } , x \neq - 8
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15
Find the ratio of the area of the shaded portion to the total area of the figure. A = 5 and B = 6.
 <strong>Find the ratio of the area of the shaded portion to the total area of the figure. A = 5 and B = 6.  </strong> A)  \frac { x } { x + 6 }  B) 5 6 C)  \frac { x } { x + 5 }  D)  \frac { x } { x + 1 }  E)  \frac { x ( x + 5 ) } { x + 6 }

A) xx+6\frac { x } { x + 6 }
B) 5
6
C) xx+5\frac { x } { x + 5 }
D) xx+1\frac { x } { x + 1 }
E) x(x+5)x+6\frac { x ( x + 5 ) } { x + 6 }
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16
A machine shop has a setup cost of $3000 for the production of a new product. The cost, C, of labor and material for producing each unit is $10.75. The average cost function for producing x units is given by Cˉ=C/x\bar { C } = C / x . Determine the domain of the average cost function.

A)all real numbers
B)all x>10.75x > 10.75
C)all x0x \neq 0
D)all integers x>0x > 0
E)all integers x>3000x > 3000
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17
Evaluate the rational function f(x)=8xx+13f ( x ) = \frac { 8 x } { x + 13 } at x=-13 and simplify. If this is not possible, state the reason.

A)0
B)-13
C)4
D)-104
E)undefined  (division by 0 ) \text { (division by } 0 \text { ) }
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18
Simplify the rational expression. a+3a2+6a+9\frac { a + 3 } { a ^ { 2 } + 6 a + 9 }

A) 17a+3,a37\frac { 1 } { 7 a + 3 } , a \neq - \frac { 3 } { 7 }
B) 1a2+9,a3\frac { 1 } { a ^ { 2 } + 9 } , a \neq 3
C) 1a+9,a9\frac { 1 } { a + 9 } , a \neq - 9
D) 1a+3,a3\frac { 1 } { a + 3 } , a \neq - 3
E) 13a+9,a31\frac { 1 } { 3 a + 9 } , a \neq - \frac { 3 } { 1 }
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19
Simplify the rational expression. 9x236x72x2\frac { 9 x ^ { 2 } - 36 x } { 72 x ^ { 2 } }

A) 9x248x\frac { 9 x ^ { 2 } - 4 } { 8 x }
B) x48x\frac { x - 4 } { 8 x }
C) x98\frac { x - 9 } { 8 }
D) 14x8x\frac { 1 - 4 x } { 8 x }
E) 136x8\frac { 1 - 36 x } { 8 }
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20
Evaluate the rational function f(x)=7xx+5f ( x ) = \frac { 7 x } { x + 5 } at x=-6 and simplify. If this is not possible, state the reason.

A)85
B)55
C)6
D)42
E)undefined ( division by 0 ) ( \text { division by } 0 \text { ) }
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21
Divide and simplify. x2+816(x+1)÷x+96(x21)\frac { x ^ { 2 } + 81 } { 6 ( x + 1 ) } \div \frac { x + 9 } { 6 \left( x ^ { 2 } - 1 \right) }

A) (x1)(x9),x6,x1( x - 1 ) ( x - 9 ) , x \neq - 6 , x \neq - 1
B) 6(x1)x9,x6,x9\frac { 6 ( x - 1 ) } { x - 9 } , x \neq - 6 , x \neq 9
C) x+9x+1,x6,x9\frac { x + 9 } { x + 1 } , x \neq 6 , x \neq 9
D) (x1)(x2+81)x+9,x1\frac { ( x - 1 ) \left( x ^ { 2 } + 81 \right) } { x + 9 } , x \neq - 1
E) (x1)(x2+81)36(x+9),x1\frac { ( x - 1 ) \left( x ^ { 2 } + 81 \right) } { 36 ( x + 9 ) } , x \neq 1
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22
One swimming pool is circular and another is rectangular. The rectangular pool's width is six times its depth. Its length is 12 feet more than its width. The circular pool has a diameter that is twice the width of the rectangular pool, and it is 2 feet deeper. Find the ratio of the circular pool's volume to the rectangular pool's volume.

A) 2π2 \pi
B) π\pi
C) 1π\frac { 1 } { \pi }
D) π2\pi ^ { 2 }
E) 6π6 \pi
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23
Divide and simplify. x2y22x216x÷(xy)22xy\frac { x ^ { 2 } - y ^ { 2 } } { 2 x ^ { 2 } - 16 x } \div \frac { ( x - y ) ^ { 2 } } { 2 x y }

A) y(xy)232x2,x0\frac { y ( x - y ) ^ { 2 } } { 32 x ^ { 2 } } , x \neq 0
B) x(xy)4(x+y),x0\frac { x ( x - y ) } { 4 ( x + y ) } , x \neq 0
C) y(x+y)(x8)(xy),x0\frac { y ( x + y ) } { ( x - 8 ) ( x - y ) } , x \neq 0
D) yx8,x0\frac { y } { x - 8 } , x \neq 0
E) yx264,x0\frac { y } { x ^ { 2 } - 64 } , x \neq 0
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24
Multiply and simplify. x3+6x249x294x36x249x+294x236x\frac { x ^ { 3 } + 6 x ^ { 2 } - 49 x - 294 } { x ^ { 3 } - 6 x ^ { 2 } - 49 x + 294 } \cdot \frac { x ^ { 2 } - 36 } { x }

A) (x6)(x7)x,x0,x±7\frac { ( x - 6 ) ( x - 7 ) } { x } , x \neq 0 , x \neq \pm 7
B) (x+6)(x+7)x,x±6,x0\frac { ( x + 6 ) ( x + 7 ) } { x } , x \neq \pm 6 , x \neq 0
C) (x6)2x(x+7),x7,x6\frac { ( x - 6 ) ^ { 2 } } { x ( x + 7 ) } , x \neq - 7 , x \neq - 6
D) (x+6)2x(x7),x7,x6\frac { ( x + 6 ) ^ { 2 } } { x ( x - 7 ) } , x \neq 7 , x \neq 6
E) (x+6)2x,x±7,x6\frac { ( x + 6 ) ^ { 2 } } { x } , x \neq \pm 7 , x \neq 6
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25
Multiply and simplify. 16x214x2+25x+255x229x42x220x+10060+4xx24x229x+7\frac { 16 x ^ { 2 } - 1 } { 4 x ^ { 2 } + 25 x + 25 } \cdot \frac { 5 x ^ { 2 } - 29 x - 42 } { x ^ { 2 } - 20 x + 100 } \cdot \frac { 60 + 4 x - x ^ { 2 } } { 4 x ^ { 2 } - 29 x + 7 }

A) (4x+1)(5x+6)(x+7)(4x+5)(x+10)(5x),x54,x5,x6\frac { ( 4 x + 1 ) ( 5 x + 6 ) ( x + 7 ) } { ( 4 x + 5 ) ( x + 10 ) ( 5 - x ) } , x \neq - \frac { 5 } { 4 } , x \neq 5 , x \neq 6
B) (4x1)(5x6)(x10)(4x5)(x6)(7x),x65,x6,x7\frac { ( 4 x - 1 ) ( 5 x - 6 ) ( x - 10 ) } { ( 4 x - 5 ) ( x - 6 ) ( 7 - x ) } , x \neq \frac { 6 } { 5 } , x \neq 6 , x \neq 7
C) (4x+1)(5x+6)(x+6)(4x+5)(x+5)(10x),x14,x7,x10\frac { ( 4 x + 1 ) ( 5 x + 6 ) ( x + 6 ) } { ( 4 x + 5 ) ( x + 5 ) ( 10 - x ) } , x \neq \frac { 1 } { 4 } , x \neq 7 , x \neq 10
D) (4x1)(5x+6)(x+10)(4x+5)(x+7)(6x),x54,x6\frac { ( 4 x - 1 ) ( 5 x + 6 ) ( x + 10 ) } { ( 4 x + 5 ) ( x + 7 ) ( 6 - x ) } , x \neq - \frac { 5 } { 4 } , x \neq 6
E) (4x+1)(5x6)(x+5)(4x5)(x7)(10x),x14,x5,x7\frac { ( 4 x + 1 ) ( 5 x - 6 ) ( x + 5 ) } { ( 4 x - 5 ) ( x - 7 ) ( 10 - x ) } , x \neq - \frac { 1 } { 4 } , x \neq 5 , x \neq 7
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26
Fill in the missing factor. 4x(x8)2(x8)()=2xx8\frac { 4 x ( x - 8 ) ^ { 2 } } { ( x - 8 ) ( - ) } = \frac { 2 x } { x - 8 }

A) 2(x8)22 ( x - 8 ) ^ { 2 }
B) (x8)2( x - 8 ) ^ { 2 }
C) 4x(x8)4 x ( x - 8 )
D) 4(x8)4 ( x - 8 )
E) 4x(x8)24 x ( x - 8 ) ^ { 2 }
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27
Multiply and simplify. 27s825s15s7243s\frac { 27 s ^ { 8 } } { 25 s } \cdot \frac { 15 s ^ { 7 } } { 243 s }

A) s1315,s0\frac { s ^ { 13 } } { 15 } , s \neq 0
B) s143,s0\frac { s ^ { 14 } } { 3 } , s \neq 0
C) s1730,s0\frac { s ^ { 17 } } { 30 } , s \neq 0
D) s1610,s0\frac { s ^ { 16 } } { 10 } , s \neq 0
E) s135,s0\frac { s ^ { 13 } } { 5 } , s \neq 0
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28
Combine and simplify. 517x117x\frac { 5 } { 17 x } - \frac { 1 } { 17 x }

A) 617x- \frac { 6 } { 17 x }
B) 417x\frac { 4 } { 17 x }
C) 417x- \frac { 4 } { 17 x }
D) 117x\frac { 1 } { 17 x }
E) 617x\frac { 6 } { 17 x }
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29
Multiply and simplify. (x4y)2x+4yx2+10xy+24y2x216y2\frac { ( x - 4 y ) ^ { 2 } } { x + 4 y } \cdot \frac { x ^ { 2 } + 10 x y + 24 y ^ { 2 } } { x ^ { 2 } - 16 y ^ { 2 } }

A) (x+4y)(x6y)x4y,x±4y\frac { ( x + 4 y ) ( x - 6 y ) } { x - 4 y } , x \neq \pm 4 y
B) x4y,x6yx - 4 y , x \neq - 6 y
C) x+6y,x0x + 6 y , x \neq 0
D) (x4y)(x+6y)x+4y,x±4y\frac { ( x - 4 y ) ( x + 6 y ) } { x + 4 y } , x \neq \pm 4 y
E) (x6y)(x+6y)x+4y,x6y\frac { ( x - 6 y ) ( x + 6 y ) } { x + 4 y } , x \neq 6 y
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30
Divide and simplify. 7xy710u6v÷21x945u5v\frac { 7 x y ^ { 7 } } { 10 u ^ { 6 } v } \div \frac { 21 x ^ { 9 } } { 45 u ^ { 5 } v }

A) 2uv83ux7,v0\frac { 2 u v ^ { 8 } } { 3 u x ^ { 7 } } , v \neq 0
B) 3y72ux8,v0\frac { 3 y ^ { 7 } } { 2 u x ^ { 8 } } , v \neq 0
C) 7x8y775u5v2,v0\frac { 7 x ^ { 8 } y ^ { 7 } } { 75 u ^ { 5 } v ^ { 2 } } , v \neq 0
D) 49x8y7150u8v2,v0\frac { 49 x ^ { 8 } y ^ { 7 } } { 150 u ^ { 8 } v ^ { 2 } } , v \neq 0
E) 5v2y87x10,v0\frac { 5 v ^ { 2 } y ^ { 8 } } { 7 x ^ { 10 } } , v \neq 0
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31
Perform the operations and simplify. [x293(x+4)x2+7x]÷xx+7\left[ \frac { x ^ { 2 } } { 9 } \cdot \frac { 3 ( x + 4 ) } { x ^ { 2 } + 7 x } \right] \div \frac { x } { x + 7 }

A) x2(x+4)3(x+7)2,x3,x0\frac { x ^ { 2 } ( x + 4 ) } { 3 ( x + 7 ) ^ { 2 } } , x \neq - 3 , x \neq 0
B) x+74x,x4,x0\frac { x + 7 } { 4 x } , x \neq - 4 , x \neq 0
C) x2(x+4)x+7,x0,x3\frac { x ^ { 2 } ( x + 4 ) } { x + 7 } , x \neq 0 , x \neq 3
D) x+43,x7,x0\frac { x + 4 } { 3 } , x \neq - 7 , x \neq 0
E) 4(x+7)21,x0,x4\frac { 4 ( x + 7 ) } { 21 } , x \neq 0 , x \neq 4
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32
Multiply and simplify. 12u6v7u+vu+v18u5\frac { 12 u ^ { 6 } v } { 7 u + v } \cdot \frac { u + v } { 18 u ^ { 5 } }

A) 6uv7,u0\frac { 6 u v } { 7 } , u \neq 0
B) u+v7,u0\frac { u + v } { 7 } , u \neq 0
C) 2uv(u+v)3(7u+v),u0\frac { 2 u v ( u + v ) } { 3 ( 7 u + v ) } , u \neq 0
D) 2(u+v)3(7u+v),u0\frac { 2 ( u + v ) } { 3 ( 7 u + v ) } , u \neq 0
E) 67u+v,u0\frac { 6 } { 7 u + v } , u \neq 0
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33
Multiply and simplify. x+2x22x23x23x2+22x16x264x2+9x+14\frac { x + 2 } { x - 2 } \cdot \frac { 2 x ^ { 2 } - 3 x - 2 } { 3 x ^ { 2 } + 22 x - 16 } \cdot \frac { x ^ { 2 } - 64 } { x ^ { 2 } + 9 x + 14 }

A) (2x1)(x2)(3x+2)(x+8),x2,x±8\frac { ( 2 x - 1 ) ( x - 2 ) } { ( 3 x + 2 ) ( x + 8 ) } , x \neq - 2 , x \neq \pm 8
B) (2x+1)(x+7)(3x2)(x+2),x2,x23\frac { ( 2 x + 1 ) ( x + 7 ) } { ( 3 x - 2 ) ( x + 2 ) } , x \neq - 2 , x \neq \frac { 2 } { 3 }
C) (2x+1)(x+8)(3x+2)(x+2),x2,x23\frac { ( 2 x + 1 ) ( x + 8 ) } { ( 3 x + 2 ) ( x + 2 ) } , x \neq - 2 , x \neq - \frac { 2 } { 3 }
D) (2x+1)(x8)(3x2)(x+7),x8,x±2\frac { ( 2 x + 1 ) ( x - 8 ) } { ( 3 x - 2 ) ( x + 7 ) } , x \neq - 8 , x \neq \pm 2
E) (2x1)(x2)(3x2)(x+7),x7,x23\frac { ( 2 x - 1 ) ( x - 2 ) } { ( 3 x - 2 ) ( x + 7 ) } , x \neq - 7 , x \neq \frac { 2 } { 3 }
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34
A machine shop has a setup cost of $3900 for the production of a new product. The cost, C, of labor and material for producing each unit is $7.25. The average cost function for producing x units is given by Cˉ=C\bar { C } = C . Find Cˉ(130)\bar { C } ( 130 ) .

A)$37.25 per unit
B)$51.625 per unit
C)$23.625 per unit
D)$55.625 per unit
E)$22.625 per unit
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35
Multiply and simplify. (4x9)(x+9)x6x94x\frac { ( 4 x - 9 ) ( x + 9 ) } { x ^ { 6 } } \cdot \frac { x } { 9 - 4 x }

A) 32494x,x49\frac { 324 } { 9 - 4 x } , x \neq \frac { 4 } { 9 }
B) x9x6,x9\frac { x - 9 } { x ^ { 6 } } , x \neq - 9
C) x+9x5,x94- \frac { x + 9 } { x ^ { 5 } } , x \neq \frac { 9 } { 4 }
D) x+9x7,x49- \frac { x + 9 } { x ^ { 7 } } , x \neq - \frac { 4 } { 9 }
E) (4x9)(x+9)36,x94\frac { ( 4 x - 9 ) ( x + 9 ) } { 36 } , x \neq - \frac { 9 } { 4 }
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36
Multiply and simplify. 2t215t27t+5t24t45t218t+81\frac { 2 t ^ { 2 } - 15 t - 27 } { t + 5 } \cdot \frac { t ^ { 2 } - 4 t - 45 } { t ^ { 2 } - 18 t + 81 }

A) 2t+3,t5,t92 t + 3 , t \neq - 5 , t \neq 9
B) t9,t5,t9t - 9 , t \neq 5 , t \neq 9
C) 2t+3t9,t9\frac { 2 t + 3 } { t - 9 } , t \neq 9
D) t+5,t9,t5t + 5 , t \neq - 9 , t \neq 5
E) 2t+3t+5,t5\frac { 2 t + 3 } { t + 5 } , t \neq - 5
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37
Perform the operations and simplify. 3u2+17u28u6÷3u2+12u+4u84u7\frac { 3 u ^ { 2 } + 17 u - 28 } { u ^ { 6 } } \div \frac { 3 u ^ { 2 } + 12 u + 4 } { u ^ { 8 } - 4 u ^ { 7 } }

A) u+7u2,u0,u43,u4\frac { u + 7 } { u ^ { 2 } } , u \neq 0 , u \neq \frac { 4 } { 3 } , u \neq 4
B) u4u,u0\frac { u - 4 } { u } , u \neq 0
C) (u4)(u+7)u(u+1),u0\frac { ( u - 4 ) ( u + 7 ) } { u ( u + 1 ) } , u \neq 0
D) (3u4)(u4)u2(u+1),u7,u0\frac { ( 3 u - 4 ) ( u - 4 ) } { u ^ { 2 } ( u + 1 ) } , u \neq - 7 , u \neq 0
E) u(3u4)(u+7)(u4)3u2+12u+4,u0,u4\frac { u ( 3 u - 4 ) ( u + 7 ) ( u - 4 ) } { 3 u ^ { 2 } + 12 u + 4 } , u \neq 0 , u \neq 4
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38
Divide and simplify. x2+2x15x2+14x+45÷x28x+15x2+5x36\frac { x ^ { 2 } + 2 x - 15 } { x ^ { 2 } + 14 x + 45 } \div \frac { x ^ { 2 } - 8 x + 15 } { x ^ { 2 } + 5 x - 36 }

A) x+9x+4,x0,x3,x5\frac { x + 9 } { x + 4 } , x \neq 0 , x \neq 3 , x \neq 5
B) x+3x5,x9,x9,x5\frac { x + 3 } { x - 5 } , x \neq - 9 , x \neq - 9 , x \neq 5
C) x+3x9,x5,x0,x9\frac { x + 3 } { x - 9 } , x \neq - 5 , x \neq 0 , x \neq 9
D) x4x5,x9,x5,x3\frac { x - 4 } { x - 5 } , x \neq - 9 , x \neq - 5 , x \neq 3
E) x3x9,x5,x3,x9\frac { x - 3 } { x - 9 } , x \neq - 5 , x \neq - 3 , x \neq 9
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39
Multiply and simplify. 28+7x(72+63x)\frac { 2 } { 8 + 7 x } \cdot ( 72 + 63 x )

A) 14,x7814 , x \neq - \frac { 7 } { 8 }
B) 56,x7856 , x \neq \frac { 7 } { 8 }
C) 72,x8772 , x \neq \frac { 8 } { 7 }
D) 18,x8718 , x \neq - \frac { 8 } { 7 }
E) 16,x016 , x \neq 0
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40
Multiply and simplify. 4r55r4\frac { 4 - r } { 5 } \cdot \frac { 5 } { r - 4 }

A) 1,r4- 1 , r \neq 4
B) 45,r5- \frac { 4 } { 5 } , r \neq 5
C) 1,r41 , r \neq 4
D) 54,r5\frac { 5 } { 4 } , r \neq - 5
E) 15,r0\frac { 1 } { 5 } , r \neq 0
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41
Combine and simplify. 17x247x2\frac { 17 } { x ^ { 2 } - 4 } - \frac { 7 } { x - 2 }

A) 7x+2(x+2)(x2)\frac { 7 x + 2 } { ( x + 2 ) ( x - 2 ) }
B) 10x+2- \frac { 10 } { x + 2 }
C) 10x2\frac { 10 } { x - 2 }
D) 17x+2(x+2)(x2)\frac { 17 x + 2 } { ( x + 2 ) ( x - 2 ) }
E) 7x+3(x+2)(x2)\frac { - 7 x + 3 } { ( x + 2 ) ( x - 2 ) }
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42
The number of males M (in thousands)and the number of females F (in thousands)participating in high school athletic programs from 1995 through 2001 can be modeled by M=463.76t+2866.40.09t+1.0M = \frac { 463.76 t + 2866.4 } { 0.09 t + 1.0 } and F=3183.41t4762.2tF = \frac { 3183.41 t - 4762.2 } { t } . In these models, t represents the year, with t=5 corresponding to 1995. Find a rational model that represents the total number T of participants in high school athletic programs.

A) 2719.65t+1895.80.91t+1.0\frac { 2719.65 t + 1895.8 } { 0.91 t + 1.0 }
B) 750.27t2+5621.212t4762.2t(0.09t+1.0)\frac { 750.27 t ^ { 2 } + 5621.212 t - 4762.2 } { t ( 0.09 t + 1.0 ) }
C) 463.76t2+1895.8t7628.6t(0.09t+1.0)\frac { 463.76 t ^ { 2 } + 1895.8 t - 7628.6 } { t ( 0.09 t + 1.0 ) }
D) 3647.17t7628.61.09t+1.0\frac { 3647.17 t - 7628.6 } { 1.09 t + 1.0 }
E) 3183.41t2+7628.6t1895.8t(0.09t+1.0)\frac { 3183.41 t ^ { 2 } + 7628.6 t - 1895.8 } { t ( 0.09 t + 1.0 ) }
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43
Find the least common denominator of the two fractions n+25n30,1010n2\frac { n + 2 } { 5 n - 30 } , \frac { 10 } { 10 n ^ { 2 } } and rewrite each fraction using the least common denominator.

A) n2(n+2)10n2(n6),(n6)10n2(n6)\frac { n ^ { 2 } ( n + 2 ) } { 10 n ^ { 2 } ( n - 6 ) } , \frac { ( n - 6 ) } { 10 n ^ { 2 } ( n - 6 ) }
B) 2n2(n+2)10n2(n6),10(n6)10n2(n6)\frac { 2 n ^ { 2 } ( n + 2 ) } { 10 n ^ { 2 } ( n - 6 ) } , \frac { 10 ( n - 6 ) } { 10 n ^ { 2 } ( n - 6 ) }
C) 2n2(n+2)5n2(n6),10(n6)5n2(n6)\frac { 2 n ^ { 2 } ( n + 2 ) } { 5 n ^ { 2 } ( n - 6 ) } , \frac { 10 ( n - 6 ) } { 5 n ^ { 2 } ( n - 6 ) }
D) 5n2(n+2)2n2(n6),10(n6)2n2(n6)\frac { 5 n ^ { 2 } ( n + 2 ) } { 2 n ^ { 2 } ( n - 6 ) } , \frac { 10 ( n - 6 ) } { 2 n ^ { 2 } ( n - 6 ) }
E) (n+2)2n2(n6),(n6)2n2(n6)\frac { ( n + 2 ) } { 2 n ^ { 2 } ( n - 6 ) } , \frac { ( n - 6 ) } { 2 n ^ { 2 } ( n - 6 ) }
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44
Combine and simplify. 2y132y213513\frac { 2 y } { 13 } - \frac { 2 y - 2 } { 13 } - \frac { 5 } { 13 }

A) 213- \frac { 2 } { 13 }
B) 513- \frac { 5 } { 13 }
C) 313- \frac { 3 } { 13 }
D) 313\frac { 3 } { 13 }
E) 513\frac { 5 } { 13 }
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45
Combine and simplify. 18+z7z15z7z\frac { 18 + z } { 7 z } - \frac { 15 - z } { 7 z }

A) 332z7z\frac { 33 - 2 z } { 7 z }
B) 37z\frac { 3 } { 7 z }
C) 3+2z7z\frac { 3 + 2 z } { 7 z }
D) 33+2z7z\frac { 33 + 2 z } { 7 z }
E) 337z\frac { 33 } { 7 z }
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46
Simplify the complex fraction. (6x5(5y)2)((3x)215y4)\frac { \left( \frac { 6 x ^ { 5 } } { ( 5 y ) ^ { 2 } } \right) } { \left( \frac { ( 3 x ) ^ { 2 } } { 15 y ^ { 4 } } \right) }

A) 3x6y610,x0,y0\frac { 3 x ^ { 6 } y ^ { 6 } } { 10 } , x \neq 0 , y \neq 0
B) 3x4y32,x0,y0\frac { 3 x ^ { 4 } y ^ { 3 } } { 2 } , x \neq 0 , y \neq 0
C) 5x5y53,x0,y0\frac { 5 x ^ { 5 } y ^ { 5 } } { 3 } , x \neq 0 , y \neq 0
D) 2x3y25,x0,y0\frac { 2 x ^ { 3 } y ^ { 2 } } { 5 } , x \neq 0 , y \neq 0
E) 5x7y46,x0,y0\frac { 5 x ^ { 7 } y ^ { 4 } } { 6 } , x \neq 0 , y \neq 0
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47
Combine and simplify. 6yx2+xy6xxy+y2\frac { 6 y } { x ^ { 2 } + x y } - \frac { 6 x } { x y + y ^ { 2 } }

A) 6(x+y)xy,xy\frac { 6 ( x + y ) } { x - y } , x \neq y
B) 6(yx)xy,xy\frac { 6 ( y - x ) } { x y } , x \neq - y
C) 6(xy)x+y,xy\frac { 6 ( x - y ) } { x + y } , x \neq - y
D) 6(xy)xy,xy\frac { 6 ( x - y ) } { x y } , x \neq y
E) 6(x+y)xy(xy),xy\frac { 6 ( x + y ) } { x y ( x - y ) } , x \neq - y
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48
Combine and simplify. 2xx10910x\frac { 2 x } { x - 10 } - \frac { 9 } { 10 - x }

A) 2x92x\frac { 2 x - 9 } { 2 x }
B) 18x10x\frac { 18 x } { 10 - x }
C) 2x+910x\frac { 2 x + 9 } { 10 - x }
D) 2x92(x10)\frac { 2 x - 9 } { 2 ( x - 10 ) }
E) 2x+9x10\frac { 2 x + 9 } { x - 10 }
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49
Fill in the missing factor. (2t+3)()6t2(2t3)=2t+32t,t32\frac { ( 2 t + 3 ) ( - ) } { 6 t ^ { 2 } ( 2 t - 3 ) } = \frac { 2 t + 3 } { 2 t } , t \neq \frac { 3 } { 2 }

A) 2t(13t)2 t ( 1 - 3 t )
B) 3t(2t1)3 t ( 2 t - 1 )
C) 3t(2t3)3 t ( 2 t - 3 )
D) 3t(2t+3)3 t ( 2 t + 3 )
E) 2t(3t+1)2 t ( 3 t + 1 )
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50
Combine and simplify. 132+4x4x+1\frac { 13 } { 2 } + \frac { 4 } { x } - \frac { 4 } { x + 1 }

A) 13x+212x(x+1)\frac { 13 x + 21 } { 2 x ( x + 1 ) }
B) 13x2+17x+42x(x+1)\frac { 13 x ^ { 2 } + 17 x + 4 } { 2 x ( x + 1 ) }
C) 212x(x+1)\frac { 21 } { 2 x ( x + 1 ) }
D) 13x2+13x+82x(x+1)\frac { 13 x ^ { 2 } + 13 x + 8 } { 2 x ( x + 1 ) }
E) 13x+172x(x+1)\frac { 13 x + 17 } { 2 x ( x + 1 ) }
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51
Find the least common multiple of the expressions. 5y2+9y2,15y23y5 y ^ { 2 } + 9 y - 2,15 y ^ { 2 } - 3 y

A) 3y(y+2)(5y1)3 y ( y + 2 ) ( 5 y - 1 )
B) 20y2+6y220 y ^ { 2 } + 6 y - 2
C) (5y1)(y+2)( 5 y - 1 ) ( y + 2 )
D) 3y(5y1)3 y ( 5 y - 1 )
E) 75y2+27y275 y ^ { 2 } + 27 y - 2
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52
Find the least common multiple of the expressions. 12x5,4(x+2)12 x ^ { 5 } , 4 ( x + 2 )

A) 12x5(x+2)12 x ^ { 5 } ( x + 2 )
B) 48x5(x+2)48 x ^ { 5 } ( x + 2 )
C) 24x624 x ^ { 6 }
D) 4x5(x+2)4 x ^ { 5 } ( x + 2 )
E) 3x5(x+2)3 x ^ { 5 } ( x + 2 )
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53
Simplify the complex fraction. (x645)(7x75)\frac { \left( \frac { x ^ { 6 } } { 45 } \right) } { \left( \frac { 7 x } { 75 } \right) }

A) 3x75,x0\frac { 3 x ^ { 7 } } { 5 } , x \neq 0
B) 5x77,x0\frac { 5 x ^ { 7 } } { 7 } , x \neq 0
C) 5x521,x0\frac { 5 x ^ { 5 } } { 21 } , x \neq 0
D) 3x535,x0\frac { 3 x ^ { 5 } } { 35 } , x \neq 0
E) 7x515,x0\frac { 7 x ^ { 5 } } { 15 } , x \neq 0
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54
Combine and simplify. xx+43x7\frac { x } { x + 4 } - \frac { 3 } { x - 7 }

A) x210x12(x+4)(x7)\frac { x ^ { 2 } - 10 x - 12 } { ( x + 4 ) ( x - 7 ) }
B) x(x11)(x+3)\frac { x ( x - 11 ) } { ( x + 3 ) }
C) x(x7)(x+7)(x4)\frac { x ( x - 7 ) } { ( x + 7 ) ( x - 4 ) }
D) x27(x+3)(x4)\frac { x ^ { 2 } - 7 } { ( x + 3 ) ( x - 4 ) }
E) x3(x+4)(x7)\frac { x - 3 } { ( x + 4 ) ( x - 7 ) }
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55
Combine and simplify. 102x3+72x+3\frac { 10 } { 2 x - 3 } + \frac { 7 } { 2 x + 3 }

A) 34x+9(2x3)(2x+3)\frac { 34 x + 9 } { ( 2 x - 3 ) ( 2 x + 3 ) }
B) 2(x+7)(2x3)(2x+3)\frac { 2 ( x + 7 ) } { ( 2 x - 3 ) ( 2 x + 3 ) }
C) 20x21(2x3)(2x+3)\frac { 20 x - 21 } { ( 2 x - 3 ) ( 2 x + 3 ) }
D) 174x\frac { 17 } { 4 x }
E) 17(2x3)(2x+3)\frac { 17 } { ( 2 x - 3 ) ( 2 x + 3 ) }
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56
Combine and simplify. 3b+110b\frac { 3 } { b } + \frac { 1 } { 10 b }

A) 3111b\frac { 31 } { 11 b }
B) b+3010b\frac { b + 30 } { 10 b }
C) 3110b\frac { 31 } { 10 b }
D) 310b2\frac { 3 } { 10 b ^ { 2 } }
E) 411b\frac { 4 } { 11 b }
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57
Combine and simplify. 7x10x(x12)+15xx(x12)\frac { 7 x - 10 } { x ( x - 12 ) } + \frac { 15 - x } { x ( x - 12 ) }

A) 17x3x(x12)\frac { 17 x - 3 } { x ( x - 12 ) }
B) 8x+25x(x12)\frac { 8 x + 25 } { x ( x - 12 ) }
C) 6x+5x(x12)\frac { 6 x + 5 } { x ( x - 12 ) }
D) 7x+15x(x12)\frac { 7 x + 15 } { x ( x - 12 ) }
E) 22x+7x(x12)\frac { 22 x + 7 } { x ( x - 12 ) }
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58
Combine and simplify. x+2x12x+920x2+8x9\frac { x + 2 } { x - 1 } - \frac { 2 } { x + 9 } - \frac { 20 } { x ^ { 2 } + 8 x - 9 }

A) x+9x+8,x9\frac { x + 9 } { x + 8 } , x \neq 9
B) x1x+9,x9\frac { x - 1 } { x + 9 } , x \neq - 9
C) x(x9)(x1)(x+9),x9\frac { x ( x - 9 ) } { ( x - 1 ) ( x + 9 ) } , x \neq 9
D) xx1,x9\frac { x } { x - 1 } , x \neq - 9
E) x20(x1)(x+9),x9\frac { x - 20 } { ( x - 1 ) ( x + 9 ) } , x \neq - 9
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59
Combine and simplify. xx249+4x210x+21\frac { x } { x ^ { 2 } - 49 } + \frac { 4 } { x ^ { 2 } - 10 x + 21 }

A) x+4(x+7)(x7)\frac { x + 4 } { ( x + 7 ) ( x - 7 ) }
B) x2+x+4(x+7)(x7)\frac { x ^ { 2 } + x + 4 } { ( x + 7 ) ( x - 7 ) }
C) x2+x+28(x+7)(x7)(x3)\frac { x ^ { 2 } + x + 28 } { ( x + 7 ) ( x - 7 ) ( x - 3 ) }
D) x2+3x+12(x+7)(x7)(x3)\frac { x ^ { 2 } + 3 x + 12 } { ( x + 7 ) ( x - 7 ) ( x - 3 ) }
E) x2+4x+21(x+7)(x7)(x3)\frac { x ^ { 2 } + 4 x + 21 } { ( x + 7 ) ( x - 7 ) ( x - 3 ) }
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60
Combine and simplify. 2x2x3+332x\frac { 2 x } { 2 x - 3 } + \frac { 3 } { 3 - 2 x }

A)1, x32x \neq \frac { 3 } { 2 }
B) 12x+3,x32- \frac { 1 } { 2 x + 3 } , x \neq - \frac { 3 } { 2 }
C) 2x+3,x32 x + 3 , x \neq 3
D) 2x+32x3,x32\frac { 2 x + 3 } { 2 x - 3 } , x \neq \frac { 3 } { 2 }
E) 2x3,x22 x - 3 , x \neq 2
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61
Simplify the complex fraction. (6x211x107x2+7x)(2x57x+1)\frac { \left( \frac { 6 x ^ { 2 } - 11 x - 10 } { 7 x ^ { 2 } + 7 x } \right) } { \left( \frac { 2 x - 5 } { 7 x + 1 } \right) }

A) 3x+2x,x52\frac { 3 x + 2 } { x } , x \neq - \frac { 5 } { 2 }
B) 7(x+1)x(3x+2),x52\frac { 7 ( x + 1 ) } { x ( 3 x + 2 ) } , x \neq - \frac { 5 } { 2 }
C) (3x+2)(7x+1)7x(x+1),x52\frac { ( 3 x + 2 ) ( 7 x + 1 ) } { 7 x ( x + 1 ) } , x \neq \frac { 5 } { 2 }
D) (3x+2)(x+1)x(7x+1),x52\frac { ( 3 x + 2 ) ( x + 1 ) } { x ( 7 x + 1 ) } , x \neq \frac { 5 } { 2 }
E) 7x+17x,x52\frac { 7 x + 1 } { 7 x } , x \neq \frac { 5 } { 2 }
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62
Simplify the complex fraction. (x2+5x36x+6)3x12\frac { \left( \frac { x ^ { 2 } + 5 x - 36 } { x + 6 } \right) } { 3 x - 12 }

A) x+93(x+6),x4\frac { x + 9 } { 3 ( x + 6 ) } , x \neq 4
B) x93(x+6),x4\frac { x - 9 } { 3 ( x + 6 ) } , x \neq - 4
C) x43(x9),x4\frac { x - 4 } { 3 ( x - 9 ) } , x \neq - 4
D) x+63(x4),x4\frac { x + 6 } { 3 ( x - 4 ) } , x \neq 4
E) x+43(x+9),x4\frac { x + 4 } { 3 ( x + 9 ) } , x \neq 4
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63
Simplify the complex fraction. (4x2x2)(14x187xx2)\frac { \left( \frac { 4 x ^ { 2 } } { x - 2 } \right) } { \left( \frac { 14 x } { 18 - 7 x - x ^ { 2 } } \right) }

A) x+92,x7,x0,x9- \frac { x + 9 } { 2 } , x \neq - 7 , x \neq 0 , x \neq 9
B) 2x(x+9)7,x9,x0,x2- \frac { 2 x ( x + 9 ) } { 7 } , x \neq - 9 , x \neq 0 , x \neq 2
C) 9x7,x2,x0,x7\frac { 9 - x } { 7 } , x \neq - 2 , x \neq 0 , x \neq 7
D) 7x(x9)2,x9,x2,x0\frac { 7 x ( x - 9 ) } { 2 } , x \neq - 9 , x \neq - 2 , x \neq 0
E) 4x(9x)7,x0,x7,x9\frac { 4 x ( 9 - x ) } { 7 } , x \neq 0 , x \neq 7 , x \neq 9
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64
Simplify the complex fraction. 64x2144x+81x2+10x+25÷16x210x92x2+3x35\frac { 64 x ^ { 2 } - 144 x + 81 } { x ^ { 2 } + 10 x + 25 } \div \frac { 16 x ^ { 2 } - 10 x - 9 } { 2 x ^ { 2 } + 3 x - 35 }

A) 2(8x+9)x9,x98,x0\frac { 2 ( 8 x + 9 ) } { x - 9 } , x \neq - \frac { 9 } { 8 } , x \neq 0
B) (x5)(8x1)(x+9)(2x+1),x5,x18\frac { ( x - 5 ) ( 8 x - 1 ) } { ( x + 9 ) ( 2 x + 1 ) } , x \neq 5 , x \neq \frac { 1 } { 8 }
C) (8x9)(2x7)(x+5)(2x+1),x98,x72\frac { ( 8 x - 9 ) ( 2 x - 7 ) } { ( x + 5 ) ( 2 x + 1 ) } , x \neq \frac { 9 } { 8 } , x \neq \frac { 7 } { 2 }
D) (x9)(2x+1)(8x9)(2x1),x9,x12\frac { ( x - 9 ) ( 2 x + 1 ) } { ( 8 x - 9 ) ( 2 x - 1 ) } , x \neq 9 , x \neq \frac { 1 } { 2 }
E) 7(8x9)x+5,x89,x0- \frac { 7 ( 8 x - 9 ) } { x + 5 } , x \neq - \frac { 8 } { 9 } , x \neq 0
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65
Simplify the complex fraction. (16x)x6\frac { \left( 1 - \frac { 6 } { x } \right) } { \frac { x } { 6 } }

A) 6x\frac { 6 } { x }
B) -1
C) 36x- \frac { 36 } { x }
D) x6\frac { x } { 6 }
E) 6(x6)x2\frac { 6 ( x - 6 ) } { x ^ { 2 } }
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66
Simplify the expression. 7yy13y2\frac { 7 y - y ^ { - 1 } } { 3 - y ^ { - 2 } }

A) y(7y21)3y21,y0\frac { y \left( 7 y ^ { 2 } - 1 \right) } { 3 y ^ { 2 } - 1 } , y \neq 0
B) 6y23y21,y0\frac { 6 y ^ { 2 } } { 3 y ^ { 2 } - 1 } , y \neq 0
C) 3y7y1,y0\frac { 3 y } { 7 y - 1 } , y \neq 0
D) 2y23y21,y0\frac { 2 y ^ { 2 } } { 3 y ^ { 2 } - 1 } , y \neq 0
E) 7y3y1,y0\frac { 7 y } { 3 y - 1 } , y \neq 0
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67
Simplify the complex fraction. (xx1)(x1x)\frac { \left( \frac { x } { x - 1 } \right) } { \left( \frac { x } { 1 - x } \right) }

A) 1x1,x0,x1\frac { 1 } { x - 1 } , x \neq 0 , x \neq 1
B) 11x,x0,x1\frac { 1 } { 1 - x } , x \neq 0 , x \neq 1
C) 1,x0,x1- 1 , x \neq 0 , x \neq 1
D) 1,x0,x11 , x \neq 0 , x \neq 1
E) 2,x0,x12 , x \neq 0 , x \neq 1
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68
Perform the division. x217x+70x7\frac { x ^ { 2 } - 17 x + 70 } { x - 7 }

A) x7,x7x - 7 , x \neq 7
B) x+17+100x7,x7x + 17 + \frac { 100 } { x - 7 } , x \neq - 7
C) x+70x7,x7x + \frac { 70 } { x - 7 } , x \neq 7
D) x10,x7x - 10 , x \neq 7
E) x3+49x7,x7x - 3 + \frac { 49 } { x - 7 } , x \neq - 7
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69
Determine the average of the two real numbers 3x5\frac { 3 x } { 5 } and 5x9\frac { 5 x } { 9 } .

A) 16x9\frac { 16 x } { 9 }
B) 26x45\frac { 26 x } { 45 }
C) 52x45\frac { 52 x } { 45 }
D) 2x7\frac { 2 x } { 7 }
E) 4x5\frac { 4 x } { 5 }
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70
Simplify the complex fraction. (4x+9)(4x9)\frac { \left( \frac { 4 } { x } + 9 \right) } { \left( \frac { 4 } { x } - 9 \right) }

A) 4x+94x9,x0\frac { 4 x + 9 } { 4 x - 9 } , x \neq 0
B) 9x44x9,x0\frac { 9 x - 4 } { 4 x - 9 } , x \neq 0
C) 9x+44,x0\frac { 9 x + 4 } { 4 } , x \neq 0
D) 9x+449x,x0\frac { 9 x + 4 } { 4 - 9 x } , x \neq 0
E) 1,x0- 1 , x \neq 0
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71
Simplify the complex fraction. (1+7y)\left( 1 + \frac { 7 } { y } \right)
yy

A) y+7y2\frac { y + 7 } { y ^ { 2 } }
B) 7y+17 y + 1
C) 8
D) 8y
E) yy+7\frac { y } { y + 7 }
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72
Simplify the complex fraction. (8+64x8)(9+72x8)\frac { \left( 8 + \frac { 64 } { x - 8 } \right) } { \left( 9 + \frac { 72 } { x - 8 } \right) }

A) 8x8,x64,x0- \frac { - 8 } { x - 8 } , x \neq 64 , x \neq 0
B) 881,x8,x9\frac { 8 } { 81 } , x \neq 8 , x \neq 9
C) 9x8,x81,x8\frac { 9 } { x - 8 } , x \neq 81 , x \neq 8
D) 649,x0,x9\frac { 64 } { 9 } , x \neq 0 , x \neq 9
E) 89,x0,x8\frac { 8 } { 9 } , x \neq 0 , x \neq 8
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73
Perform the division. 6z3+7z22z2z\frac { 6 z ^ { 3 } + 7 z ^ { 2 } - 2 z } { 2 z }

A) 3z2+7z21,z03 z ^ { 2 } + \frac { 7 z } { 2 } - 1 , z \neq 0
B) 6z3+7z2,z06 z ^ { 3 } + 7 z ^ { 2 } , z \neq 0
C) 13z222z,z0\frac { 13 z ^ { 2 } } { 2 } - 2 z , z \neq 0
D) 6z3+5z2,z06 z ^ { 3 } + \frac { 5 z } { 2 } , z \neq 0
E) 10z22z,z010 z ^ { 2 } - 2 z , z \neq 0
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74
Simplify the complex fraction. (yxxy)(x+y5xy)\frac { \left( \frac { y } { x } - \frac { x } { y } \right) } { \left( \frac { x + y } { 5 x y } \right) }

A) 5x+y,x0,y0,xy\frac { 5 } { x + y } , x \neq 0 , y \neq 0 , x \neq - y
B) 5(x+y)xy,x0,y0,xy\frac { 5 ( x + y ) } { x - y } , x \neq 0 , y \neq 0 , x \neq y
C) yx5,x0,y0,xy\frac { y - x } { 5 } , x \neq 0 , y \neq 0 , x \neq y
D) 5xyx+y,x0,y0,xy\frac { 5 x y } { x + y } , x \neq 0 , y \neq 0 , x \neq - y
E) 5(yx),x0,y0,xy5 ( y - x ) , x \neq 0 , y \neq 0 , x \neq - y
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75
Simplify the complex fraction. (3x+5)(12x+10+7x+5)\frac { \left( \frac { 3 } { x + 5 } \right) } { \left( \frac { 1 } { 2 x + 10 } + \frac { 7 } { x + 5 } \right) }

A) 21x+5,x5\frac { 21 } { x + 5 } , x \neq 5
B) 67,x5\frac { 6 } { 7 } , x \neq 5
C) x+535,x5\frac { x + 5 } { 35 } , x \neq - 5
D) 37(x+5),x5\frac { 3 } { 7 ( x + 5 ) } , x \neq - 5
E) 615,x5\frac { 6 } { 15 } , x \neq - 5
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76
Simplify the complex fraction. (x214x+45x210x+25)(16+6xx2x23x40)\frac { \left( \frac { x ^ { 2 } - 14 x + 45 } { x ^ { 2 } - 10 x + 25 } \right) } { \left( \frac { 16 + 6 x - x ^ { 2 } } { x ^ { 2 } - 3 x - 40 } \right) }

A) (x9)(x+5)x8,x9,x5\frac { ( x - 9 ) ( x + 5 ) } { x - 8 } , x \neq - 9 , x \neq 5
B) (5x)(x+2)(x8)(x+9),x2,x9\frac { ( 5 - x ) ( x + 2 ) } { ( x - 8 ) ( x + 9 ) } , x \neq - 2 , x \neq 9
C) x+8x5,x8,x2\frac { x + 8 } { x - 5 } , x \neq - 8 , x \neq 2
D) x9x+2,x5,x9\frac { x - 9 } { x + 2 } , x \neq 5 , x \neq 9
E) (9x)(x+5)(x5)(x+2),x5,x8\frac { ( 9 - x ) ( x + 5 ) } { ( x - 5 ) ( x + 2 ) } , x \neq - 5 , x \neq 8
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77
Perform the division. (x2+19x+90)÷(x+9)\left( x ^ { 2 } + 19 x + 90 \right) \div ( x + 9 )

A) x+19+9x+9,x9x + 19 + \frac { 9 } { x + 9 } , x \neq - 9
B) x+9,x9x + 9 , x \neq 9
C) x+90x+9,x9x + \frac { 90 } { x + 9 } , x \neq - 9
D) x1+100x+9,x9x - 1 + \frac { 100 } { x + 9 } , x \neq 9
E) x+10,x9x + 10 , x \neq - 9
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78
Simplify the complex fraction. (10x20x+8)(x2x+8)\frac { \left( \frac { 10 x - 20 } { x + 8 } \right) } { \left( \frac { x - 2 } { x + 8 } \right) }

A) 8,x2,x108 , x \neq - 2 , x \neq 10
B) 2,x10,x82 , x \neq - 10 , x \neq 8
C) 10,x8,x210 , x \neq - 8 , x \neq 2
D) 1,x0,x8- 1 , x \neq 0 , x \neq 8
E) 1,x0,x21 , x \neq 0 , x \neq 2
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79
Simplify the expression. 9x1+9y1x1y1\frac { 9 x ^ { - 1 } + 9 y ^ { - 1 } } { x ^ { - 1 } - y ^ { - 1 } }

A) 18,x0,y0- 18 , x \neq 0 , y \neq 0
B) x+y9xy,x0,y0\frac { x + y } { 9 x y } , x \neq 0 , y \neq 0
C) xy9(x+y),x0,y0\frac { x y } { 9 ( x + y ) } , x \neq 0 , y \neq 0
D) 9(x+y)yx,x0,y0\frac { 9 ( x + y ) } { y - x } , x \neq 0 , y \neq 0
E) 9(xy)xy,x0,y0\frac { 9 ( x - y ) } { x y } , x \neq 0 , y \neq 0
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80
Use the function f(x)=1xf ( x ) = \frac { 1 } { x } to find and simplify the expression for f(14+h)f(14)h\frac { f ( 14 + h ) - f ( 14 ) } { h } .

A) 114(h+14),h0- \frac { 1 } { 14 ( h + 14 ) } , h \neq 0
B) 14h(h+14),h0- \frac { 14 h } { ( h + 14 ) } , h \neq 0
C) h14(h+14),h0- \frac { h } { 14 ( h + 14 ) } , h \neq 0
D) 114(h+14),h0\frac { 1 } { 14 ( h + 14 ) } , h \neq 0
E) 1(h+14),h0- \frac { 1 } { ( h + 14 ) } , h \neq 0
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