SOLUTION: If f(x)=x^2 and g(x)=2x-1, then f(g(-2)) is
1)25
2)15
3)9
4)7
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Question 455285: If f(x)=x^2 and g(x)=2x-1, then f(g(-2)) is
1)25
2)15
3)9
4)7
Answer by mathmartian(7) (Show Source): You can put this solution on YOUR website!
In order to work with composite functions, remember to work from the inside out. So let's solve for g(-2) first
g(-2)=2(-2)-1
g(-2)=-4-1
g(-2)=-5
Since g(-2)=-5, we can substitute it into f(g(-2)) to get f(-5)
So let's solve f(-5)
f(-5)=(-5)²
f(-5)=25
So the answer is 25 or solution 1.
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