Question 434608
If f(x)=2x+1 and g(x)=x-12, then f(g(x)) =??
.
Since:
g(x)=x-12
then, 
we substitute the 'x' from f(x) with "x-12" thus:
f(g(x)) = 2(x-12)+1
f(g(x)) = 2x-24+1
f(g(x)) = 2x-23  (this is what they're looking for)