SOLUTION: Can someone please walk me through this? f(x)=5x-2 and g(x)=x^2+x (f o g)(3) = ______ Thank you, Alberto jerry@san.rr.com

Algebra ->  Algebra  -> Rational-functions -> SOLUTION: Can someone please walk me through this? f(x)=5x-2 and g(x)=x^2+x (f o g)(3) = ______ Thank you, Alberto jerry@san.rr.com      Log On

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Question 326062: Can someone please walk me through this?
f(x)=5x-2 and g(x)=x^2+x
(f o g)(3) = ______
Thank you,
Alberto
jerry@san.rr.com

Answer by solver91311(16885) About Me  (Show Source):
You can put this solution on YOUR website!


First things first. If , then , . Whatever is in the parentheses following the function designator replaces the independent variable in the function definition.

Next: means . So





But since ,





Note that



John