SOLUTION: I need help with function compositions. Question: let f(x)=5x-1 and g(x)=x^2+4

SOLUTION: I need help with function compositions. Question: let f(x)=5x-1 and g(x)=x^2+4

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Question 989140: I need help with function compositions.
Question: let f(x)=5x-1 and g(x)=x^2+4
Answer by farohw(175) (Show Source): You can put this solution on YOUR website!

Hello,

This depends on the type of composite function(s) you want to solve:

Let f(x)= 5x-1 and g(x)= x^2+4

If (fog)(x) is f(g(x)) then f(x^2+4) and 5(x^2+4) - 1.

Then you calculate as follows,

5(x^2+4) - 1 = 5x^2 + 20 - 1 = 5x^2 + 19.

Best,
Farohw

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