Algebra 2 | Unit 4 | Lesson 6: Writing Equations for Exponential Functions | Practice Problems

The tuition at a public university was $21,000 in 2008. Between 2008 and 2010, the tuition had increased by 15%. Since then, it has continued to grow exponentially. Select all statements that describe the growth in tuition cost.

• The tuition cost increased 7.5% each year.

• The tuition cost increased about 7.2% each year.

• The tuition cost roughly doubles in 10 years.

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The number of fish in a lake is growing exponentially. The table shows the values, in thousands, after different numbers of years since the population was first measured. By what factor does the population grow every two years? Use this information to fill out the table for 4 years and 6 years. By what factor does the population grow every year? Explain how you know, and use this information to complete the table.

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The value of a home increases by 7% each year. Explain why the value of the home doubles approximately once each decade.

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