HW - 6.7 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.

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Tags

CCSS.HSF-LE.A.1C

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.

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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.

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Tags

CCSS.HSF-LE.A.1C

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.

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Tags

CCSS.HSF-LE.A.1C

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.

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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.

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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.

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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.

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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.

Tags

CCSS.HSF-LE.A.1C