if f(x)=3x+7 and g(x)=2x-5, find g[f(-3)].

Damian smith
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1 Answer

f=3x+7

g=2x-5

g(f(x))=2*(3x+7) -5

=6x+14-5

=6x+9

at x=3, get 18+9=27
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