summers77 summers77

08-05-2017
Mathematics

contestada

If f(x)=-2x^3, g(x)=3x-5, and h(x)=x-1, what is f(g(h(3)))?
A)-129
B)-54
C)-53
D)-2

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apologiabiology apologiabiology

08-05-2017

f(g(h(3)))
find h(3)
h(3)=3-1=2
now

f(g(h(3))=f(g(2))
find g(2)
g(2)=3(2)-5=6-5=1

now

f(g(h(3)))=f(g(2))=f(1)
find f(1)
f(1)=-2(1)^3
f(1)=-2(1)
f(1)=-2

answer is D

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