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# 5 5 A.In the model W ( t ) = 350(1.14) t , W ( t ) is the number of humpback whales off the coast of Australia t years since 1981.

13.5 5

A.In the model

W(t) = 350(1.14)t,

W(t) is the number of humpback whales off the coast of Australia t years since 1981. According to this model, when will the whale population reach 15,000?

The whale population will reach 15,000 midway through the year ________.

B.What interest rate compounded continuously do you need to earn to make $8000 double in 8 years? (Round your answer to two decimal places.)

_______%

C.Solve the system of equations by graphing the equations on your graphing calculator. (Round your answers to one decimal place.)

y = 1.4