Answer
$ q\leq 6$
The graph is shown below.
Work Step by Step
The given inequality is
$\Rightarrow 9+q\leq 15$
Subtract $9$ from each side.
$\Rightarrow 9+q-9\leq 15-9$
Simplify.
$\Rightarrow q\leq 6$
Hence, the solution is $ q\leq 6$.
Use a close circle because $6$ is a solution.
Shade the number line on the left side.