Question

The fish population of Lake Collins is decreasing at a rate of 5% per year. In 2001 there were about 1,200 fish. Write an exponential decay function to model this situation. Then find the population in 2006.

Answer 1

y = 1,200(0.95)t

The population in 2006 will be about 929 fish.

Answer 2

an exponential decay function to model this situation is:

y = 1300 * (0.97) ^ x

The population in 2010 is:

y = 1083

Explanation: