#### Answer

12

#### Work Step by Step

We are asked to find $(g∘g)(1)$. We know that $(g∘g)(x)=g(g(x))$.
Therefore, $(g∘g)(1)=g(g(1))$.
From the first table, we see that $g(1)=9$. From the first table, we see that $g(9)=12$.
Therefore, $g(g(1))=g(9)=12$.