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April 25, 2015

Homework Help: PreCalc

Posted by Jo on Monday, December 7, 2009 at 11:30pm.

Naturalists find that the populations of some kinds of predatory animals vary periodically. Assume that the population of foxes in a certain forest varies sinusoidally with time. Records started being kept when t = 0 years. A minimum number, 200 foxes, occured when t = 2.9 years. The next maximum, 800 foxes, occurred at t = 5.1 years

I have to find

Foxes are declared to be an endangered species when their population drops below 300. Between what two nonnegative values of "t" were foxes first endangered.

I found one to be about

6.71101496 years i don't know if this is one of the first two how do I deal and how do I find the other one?

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