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OpenStax, Precalculus 2e §7.6 Modeling with Trigonometric Functions · Exercise 42 · Trigonometry · Identities

Modeling with Trigonometric Functions · Exercise 42

Create a function modeling the described behavior. Then, calculate the desired result using a calculator.

Whitefish populations are currently at 500 in a lake. The population naturally oscillates above and below by 25 each year. If humans overfish, taking 4% of the population every year, in how many years will the lake first have fewer than 200 whitefish?

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OpenStax, Precalculus 2e · §7.6 Modeling with Trigonometric Functions · Exercise 42

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