Answer:
The very top one and the very bottom one.
Step-by-step explanation:
Since f(g(x)) means x goes into g and g goes into f..
If we plug in x+2 to the equation at the top, we would get 3/(x+2)^2
The bottom: (x+2)^2 gets plugged into x.. therefore, 3/(x+2)^2 will also occur.
