Question

evaluate: $g(f(3))$
$y = f(x)$
$y = g(x)$

Explanation:

Step1: Find $f(3)$ from $y=f(x)$

Locate $x=3$ on $y=f(x)$ graph; $f(3)=3$.

Step2: Find $g(f(3))=g(3)$

Locate $x=3$ on $y=g(x)$ graph; $g(3)=9$.

Answer:

9