Garciavan Garciavan

28-03-2017
Mathematics

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

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28-03-2017

(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

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