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If f(x)=3x-4 and g(x)=x^2 -1 what is f(g(-3))? a) -34 b) 8 c) 20 d) 168
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If f(x)=3x-4 and g(x)=x^2 -1

what is f(g(-3))?

a) -34
b) 8
c) 20
d) 168

User HeroicKatora
by
6.1k points

1 Answer

2 votes
Answer: C) 20
Explanation: Subsitute (-3) into the g(x) equation so you get g(-3)= (-3)^2-1= 9-1=8
Then replace the x as 8 in f(x) and you get 3(8)-4=24-4= 20.
User Cgull
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