Exponential Functions

An element with mass 420 grams decays by 11.8% per minute. How much of the element is remaining after 16 minutes, to the nearest 10th of a gram?

56.3

A town has a population of 5,000 and grows at 4% every year. What will be the population after 7 years, to the nearest whole number?

6,580

An element with mass 330 grams decays by 25.5% per minute. How much of the element is remaining after 5 minutes, to the nearest hundredth of a gram?

75.73

A new car is purchased for 23,200 dollars. The value of the car depreciates at 13.25% per year. What will the value of the car be, to the nearest dollar, after 7 years?

8,578

A new car is purchased for 19,900 dollars. The value of the car depreciates at 7.5% per year. What will the value of the car be, to the nearest cent, after 8 years?

10,665.64

A new car is purchased for 21,100 dollars. The value of the car depreciates at 10.5% per year. What will the value of the car be, to the nearest cent, after 6 years?

10,844.78

3,400 dollars is placed in an account with an annual interest rate of 7.5%. How much will be in the account after 17 years, to the nearest cent?

11625.8

A town has a population of 14,000 and grows at 2.5% every year. What will be the population after 5 years, to the nearest whole number?

15,840

An element with mass 310 grams decays by 5.7% per minute. How much of the element is remaining after 9 minutes, to the nearest hundredth of a gram?

182.8

A new car is purchased for 24,500 dollars. The value of the car depreciates at 14.75% per year. What will the value of the car be, to the nearest cent, after 14 years?

2,623.54

A town has a population of 18,000 and grows at 2% every year. What will be the population after 12 years, to the nearest whole number?

22,828

A town has a population of 17,000 and grows at 3% every year. What will be the population after 10 years, to the nearest whole number?

22,847

A town has a population of 17,000 and grows at 4% every year. What will be the population after 12 years, to the nearest tenth?

27,217.5

3,600 dollars is placed in an account with an annual interest rate of 9%. How much will be in the account after 25 years, to the nearest cent?

31,043.09

9,000 dollars is placed in an account with an annual interest rate of 7.75%. How much will be in the account after 18 years, to the nearest cent?

34,494.79

An element with mass 670 grams decays by 27.3% per minute. How much of the element is remaining after 9 minutes, to the nearest tenth of a gram?

38

A new car is purchased for 17,600 dollars. The value of the car depreciates at 11.75% per year. What will the value of the car be, to the nearest dollar, after 11 years?

4,450

An element with mass 290 grams decays by 13.2% per minute. How much of the element is remaining after 14 minutes, to the nearest 10th of a gram?

40

4,400 dollars is placed in an account with an annual interest rate of 8.25%. How much will be in the account after 29 years, to the nearest cent?

43,839.13

1,600 dollars is placed in an account with an annual interest rate of 5.25%. How much will be in the account after 25 years, to the nearest cent?

5,750.06