f(g(4))
f(x)=x^2+x
G(x)=3x+1
Just plug in again using the strategy I JUST showed you:
g(4)=3(4)+1=13⟹f(13)=132+13⟹169+13⟹182
sorry man i know and i did so i was about to come back say nvm but yea thanks man...
Oh, sorry about being rash about it.
its ok man i needed that anyways.keeps me on track.