Answer
$n\geq -2$
The graph is shown below.
Work Step by Step
The given inequality is
$\Rightarrow -20\leq 10n$
Divide each side by $10$.
$\Rightarrow \frac{-20}{10}\leq \frac{10n}{10}$
Simplify.
$\Rightarrow -2\leq n$
Hence, the solution is $n\geq -2$.
Use a close circle because $-2$ is a solution.
Shade the number line on the right side.
