SOLUTION: If f(x) = x2 + x and g(x) = x - 3, find f(g(7)).

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Question 350965: If f(x) = x2 + x and g(x) = x - 3, find f(g(7)).
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
First, let's compute g(7). To do that, plug x=7 into g%28x%29=x-3 to get


g%287%29=7-3=4


So g%287%29=4


Now plug g(7) into f(x) to get f%28g%287%29%29=f%284%29=4%5E2%2B4=16%2B4=20


So f%28g%287%29%29=20


If you need more help, email me at jim_thompson5910@hotmail.com

Also, feel free to check out my tutoring website

Jim