Answer
$r\leq 11$
The graph is shown below.
Work Step by Step
The given inequality is
$\Rightarrow -2r\geq -22$
Divide each side by $-2$. Reverse the inequality symbol.
$\Rightarrow \frac{-2r}{-2}\leq \frac{-22}{-2}$
Simplify.
$\Rightarrow r\leq 11$
Hence, the solution is $r\leq 11$.
Use a close circle because $11$ is a solution.
Shade the number line on the left side.
