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Let f(x) = 3x +5 and g(x) = -4x +7. Find (fog)(-4)

Let f(x) = 3x +5 and g(x) = -4x +7. Find (fog)(-4)
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2 votes
Let f(x) = 3x +5 and g(x) = -4x +7. Find (fog)(-4)

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User DrJones
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7.5k points

1 Answer

1 vote
(fog)(x)=f(g(x))

f(g(x))=3(-4x+7)+5
f(g(-4))=3(-4(4)+7)+5=3(-16+7)+5=3(-9)+5=-27+5=-22


(fog)(-4)=-22
answered
User Thornate
by
9.0k points
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