Exponential Functions Review

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CCSS.HSN.RN.A.2

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What is the population of Brownville in 1980 according to the model y=720,500(1.022)^x?

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720,500 people

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CCSS.HSF-IF.C.8B

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What is the general form of an exponential function?

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y = a(1 + r)^t, where a is the initial amount, r is the rate of growth, and t is time.

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CCSS.HSF-IF.C.8B

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CCSS.HSF.BF.B.5

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What does the base of an exponential function represent?

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The base indicates the growth factor; a base greater than 1 indicates growth, while a base between 0 and 1 indicates decay.

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CCSS.HSF-IF.C.8B

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f(0) = 5(3^0) = 5.

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CCSS.HSF-IF.C.8B

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What is the domain of an exponential function?

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The domain is all real numbers, (-∞, ∞).

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The range is (0, ∞).