Question 1

Suppose you deposit $1,600 in an account with an annual interest rate of 9% compounded quarterly. Find the amount of money in the account after 15 years. Please round your answer to the nearest cent. $__________

Accepted Answer

The answer of Suppose you deposit $1,600 in an account...

Question 2

Automobiles built before 1993 use Freon in their air conditioners. The federal government now prohibits the manufacture of Freon. Because the supply of Freon is decreasing, the price per pound is increasing exponentially. Current estimates put the formula for the price per pound of Freon at  where t is the number of years since 1990. Find the price of Freon in 1990. Please round your answer to the nearest cent. $__________ per pound Find the price of Freon in 1998. Please round your answer to the nearest cent. $__________ per pound How much will Freon cost in the year 2007?. Please round your answer to the nearest cent. $__________ per pound

Accepted Answer

The answer of Automobiles built before 1993 use Freon in...

Question 3

For the following one-to-one function, find the equation of the inverse. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of For the following one-to-one function, find the...

Question 4

The half-life of iodine-131 is 8 days. A patient is administered a 1,100-microgram dose of iodine-131 . How much iodine-131 will be in the patient's system after 8 days? __________ micrograms How much iodine-131 will be in the patient's system after 21 days? Please round your answer to one decimal place. __________ micrograms

Accepted Answer

The answer of The half-life of iodine-131 is 8 days....

Question 5

The function  where V is value and t is time in years, can be used to find the value of a crane for the first 6 years of use. What is the value of the crane after 4 years and 3 months? Please round your answer to the nearest dollar. $ __________

Accepted Answer

The answer of The function  where V is value...

Question 6

For the following one-to-one function, find the equation of the inverse. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of For the following one-to-one function, find the...

Question 7

Suppose you deposit $1,900 in an account with an annual interest rate of 7% compounded continuously. How much money would the account contain after 3 years. Please round your answer to the nearest cent. $__________

Accepted Answer

The answer of Suppose you deposit $1,900 in an account...

Question 8

For the following one-to-one function, find the equation of the inverse. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of For the following one-to-one function, find the...

Question 9

The function  where V is value and t is time in years, can be used to find the value of a printing press during the first 7 years of use. How many years must pass before the printing press will be worth only $55,000? Please round your answer to the nearest month. __________ year(s) __________ month(s)

Accepted Answer

The answer of The function  where V is value...

Question 10

For the following one-to-one function, find the equation of the inverse. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

To find the inverse of a function, we switch the x and y variables and solve for y. The given function can be written as y = 11ec08ab_f6d0_0383_ae58_7795bdfce319_TBX8808_11. Swapping variables, we get x = 11ec08ab_f6d0_0383_ae58_7795bdfce319_TBX8808_11. Solving for y gives y = 11ec08ab_f6d0_2a96_ae58_6d97d31c718f_TBX8808_11, which is option C.

Question 11

The function  where V is value and t is time in years, can be used to find the value of a printing press during the first 7 years of use. What is the value of the printing press after 5 years and 4 months? Please round your answer to the nearest dollar. $__________

Accepted Answer

The answer of The function  where V is value...

Question 12

Let  and  evaluate

Accepted Answer

The answer of Let  and  evaluate ...

Question 13

Suppose you deposit $1,100 in an account with an annual interest rate of 6% compounded quarterly. How many years will it take for the account to contain $3,300? Please round your answer to two decimal places. __________ years

Accepted Answer

The answer of Suppose you deposit $1,100 in an account...

Question 14

Let  Evaluate  .  = __________

Accepted Answer

The answer of Let  Evaluate  .  =...

Question 15

Let  Evaluate  .  = __________

Accepted Answer

The answer of Let  Evaluate  .  =...

Question 16

For the following one-to-one function, find the equation of the inverse. 
A) 
B) 
C) 
D) 
E)

Accepted Answer

The answer of For the following one-to-one function, find the...

Question 17

In 1990, $699 billion were spent on health care. Health care expenditures, E , in billions of dollars, can be estimated using the function  where t is time in years since 1970 (U.S. Census Bureau.) What is the expected health care expenditure in 2005? Round to the nearest billion. $ __________ billion What is the expected health care expenditure in 2006? Round to the nearest billion. $ __________ billion What is the expected health care expenditure in 2007? Round to the nearest billion. $ __________ billion

Accepted Answer

The answer of In 1990, $699 billion were spent on...

Question 18

Let  and  evaluate

Accepted Answer

The answer of Let  and  evaluate ...

Question 19

A painting is purchased as an investment for $200. If the painting s value doubles every 3 years, then its value is given by the function  where t is the number of years since it was purchased, and V ( t ) is its value (in dollars) at that time. How many years must pass before the painting is worth $3,200? __________ years

Accepted Answer

The answer of A painting is purchased as an investment...

Question 20

The function  where V is value and t is time in years, can be used to find the value of a crane for the first 6 years of use. How much time must pass before the crane will be worth only $55,000? Please round your answer to the nearest month. __________ year(s) __________ month(s)

Accepted Answer

The answer of The function  where V is value...

Quiz 11: Exponential Functions

Suppose you deposit $1,600 in an account with an annual interest rate of 9% compounded quarterly. Find the amount of money in the account after 15 years. Please round your answer to the nearest cent. $__________

For the following one-to-one function, find the equation of the inverse.

The function where V is value and t is time in years, can be used to find the value of a crane for the first 6 years of use. What is the value of the crane after 4 years and 3 months? Please round your answer to the nearest dollar. $ __________

For the following one-to-one function, find the equation of the inverse.

Suppose you deposit $1,900 in an account with an annual interest rate of 7% compounded continuously. How much money would the account contain after 3 years. Please round your answer to the nearest cent. $__________

For the following one-to-one function, find the equation of the inverse.

The function where V is value and t is time in years, can be used to find the value of a printing press during the first 7 years of use. How many years must pass before the printing press will be worth only $55,000? Please round your answer to the nearest month. year(s) month(s)

For the following one-to-one function, find the equation of the inverse.

The function where V is value and t is time in years, can be used to find the value of a printing press during the first 7 years of use. What is the value of the printing press after 5 years and 4 months? Please round your answer to the nearest dollar. $__________

Let and evaluate

Suppose you deposit $1,100 in an account with an annual interest rate of 6% compounded quarterly. How many years will it take for the account to contain $3,300? Please round your answer to two decimal places. __________ years

Let Evaluate . = __________

Let Evaluate . = __________

For the following one-to-one function, find the equation of the inverse.

Let and evaluate

The function where V is value and t is time in years, can be used to find the value of a crane for the first 6 years of use. How much time must pass before the crane will be worth only $55,000? Please round your answer to the nearest month. year(s) month(s)