Answer:
65
Step-by-step explanation:
In order to find f(g(3)), we first need to find what is inside the parenthesis (it is obviously g(3) in the parenthesis, but if we find out what g(3)=, then we can use that to find out what f(x)=)
g(3)=3(3)^2+2
g(3)=3(9)+2
g(3)=27+2
g(3)=29
Now, we have g(x)=29
If we plug it into f(g(3)), we get: f(29)
Plug in again to find the answer
f(29)=2(29)+7
f(29)=58+7
f(29)=65
Thus, our answer is 65
