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f(x) = -2x + 1; g(x) = -4x; g(f(4)) = ?

Solution:

(g ° f)(4) = g(f(4)) = g(-7) = 28

f(x) = -2x + 1

f(4) = -2(4) + 1

f(4) = -7

g(x) = -4x

g(-7) = -4(-7)

g(-7) = 28

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Q: If fx -2x 1 and gx -4x then gf4?
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