Use the following model for the annual revenue for Amazon: R(t) = 386.06(1.31)t t is the time in years since 2020 and R(t) is in billion dollars. a) Identify whether the function is linear or exponential. Briefly explain how you know based on the formula for R(t). b) Identify the constant percent rate. Explain in a sentence what this means about Amazon's revenue changing with respect to time. c) Calculate R(0) and explain what it means in terms of Amazon's revenue and time.

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