Answer
$q\leq 12$
The graph is shown below.
Work Step by Step
The given inequality is
$\Rightarrow 15\geq q+3$
Subtract $3$ from each side.
$\Rightarrow 15-3\geq q+3-3$
Simplify.
$\Rightarrow 12\geq q$
Hence, the solution is $q\leq 12$.
Use a close circle because $12$ is a solution.
Shade the number line on the left side.