An open box is to be made from a square piece of cardboard, 28 inches on a side, by cutting equal squares with sides of length x from the corners and turning up the sides (see figure below).Determine the function, V, in terms of x, that represents the volume of the box.
A) $V ( x ) = - 2 x ^ { 3 } + 28 x ^ { 2 }$
B) $V ( x ) = - 4 x ^ { 3 } + 56 x ^ { 2 }$
C) $V ( x ) = 4 x ^ { 3 } - 56 x ^ { 2 } + 28 x$
D) $V ( x ) = - 4 x ^ { 3 } + 56 x ^ { 2 } - 28 x$
E) $V ( x ) = 4 x ^ { 3 } - 112 x ^ { 2 } + 784 x$

Question

An open box is to be made from a square piece of cardboard, 28 inches on a side, by cutting equal squares with sides of length x from the corners and turning up the sides (see figure below).Determine the function, V, in terms of x, that represents the volume of the box.  
A) $V ( x ) = - 2 x ^ { 3 } + 28 x ^ { 2 }$ 
B) $V ( x ) = - 4 x ^ { 3 } + 56 x ^ { 2 }$ 
C) $V ( x ) = 4 x ^ { 3 } - 56 x ^ { 2 } + 28 x$ 
D) $V ( x ) = - 4 x ^ { 3 } + 56 x ^ { 2 } - 28 x$ 
E) $V ( x ) = 4 x ^ { 3 } - 112 x ^ { 2 } + 784 x$

Quizplus · Accepted Answer

The Answer of An open box is to be made from a square piece of cardboard, 28 inches on a side, by cutting equal squares with sides of length x from the corners and turning up the sides (see figure below).Determine the function, V, in terms of x, that represents the volume of the box.  
A) $V ( x ) = - 2 x ^ { 3 } + 28 x ^ { 2 }$ 
B) $V ( x ) = - 4 x ^ { 3 } + 56 x ^ { 2 }$ 
C) $V ( x ) = 4 x ^ { 3 } - 56 x ^ { 2 } + 28 x$ 
D) $V ( x ) = - 4 x ^ { 3 } + 56 x ^ { 2 } - 28 x$ 
E) $V ( x ) = 4 x ^ { 3 } - 112 x ^ { 2 } + 784 x$

An Open Box Is to Be Made from a Square V(x)=−2x3+28x2V ( x ) = - 2 x ^ { 3 } + 28 x ^ { 2 }V(x)=−2x3+28x2

An Open Box Is to Be Made from a Square $V ( x ) = - 2 x ^ { 3 } + 28 x ^ { 2 }$