Posted by **Alex** on Sunday, May 2, 2010 at 10:37pm.

a) A population of 460 animals that increases at an annual rate of 15%. Write an exponential function to model.

b) Write an exponential function to model. Predict the value of the function after 5 years(nearest whole number). A population of 430 animals that decreases at annual rate of 12%.

c) You decide to buy a boat that costs $ 8700. The normal depreciation for such a boat is 20% per year. What is the value of the boat after 4 years?

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