HW - 6.5 Exponential Growth & Decay Word Problems

2) The cost of tuition at a college is $12,000 and is increasing at a rate of 6% each year. Use an exponential function to find the tuition cost after 4 years.

Type in your answer using without any units. Round to 2 decimal places.

3) The number of student athletes at a local high school is 300 and is increasing at a rate of 8% per year. Use an exponential function to find the number of student athletes after 5 years.

Type in your answer without units.

4) Annual sales for a company are $149,999 and are increasing at a rate of 6% per year. Use an exponential function to find the annual sales after 7 years.

Type in your answer without units. Round to 2 decimal places.

5) The population of a small town is 1600 and is increasing at a rate of 3% per year. Use an exponential function to find the population of the town after 10 years.

Type in your answer without units.

6) In 1985, there were 285 cell phone subscribers in Mayville. The number of subscribers increased by 75% per year after 1985. Find the number of subscribers in 2008.

Type in your answer without units.

7) The population of a town is decreasing at a rate of 1% per year. In 2000 there were 1300 people. Use an exponential function to find the population in 2008.

Type in your answer without units.

9) A farmer buys a tractor for $50,000. If the tractor depreciates 10% per year, use an exponential function to find the value of the tractor in 7 years.

Type in your answer without units. Round to 2 decimal places.

10) An investment of $8200 loses value at a rate of 2% per year. Use an exponential function to find the value of the investment after 9 years.

Type in your answer without units. Round to 2 decimal places.

11) The initial value of a book is $58 and decreases at a rate of 7% per year. Use an exponential function to find the value of the book after 8 years.

Type in your answer without units. Round to 2 decimal places.

12) The population of a town is decreasing at a rate of 2.5% per year. If the population in 2000 was 28,000, what is the expected population in 2015 if this rate of decrease continues?

Type in your answer without units.