Answer:
3
Step-by-step explanation:
Well f(x)=4+x works as 4+2=6 and 4+3 =7.
So then find inverse of f(x)=4+x which is f^-1(x)=x-4.
So then plug in f(3) to inverse function.
f(3)=4 +3=7
f^-1(7)=7-4=3
