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03-07-2019
Mathematics

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If f(x) = -2x - 5 and g(x) = x^4 what is (gºf)(-4)

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MathPhys MathPhys

03-07-2019

Answer:

81

Step-by-step explanation:

(g∘f)(-4) is another way of writing g(f(-4)).

First, find f(-4):

f(-4) = -2(-4) − 5

f(-4) = 3

Now plug into g(x):

g(f(-4)) = g(3)

g(f(-4)) = 3^4

g(f(-4)) = 81

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