Answer
$ x\geq 25$
The graph is shown below.
Work Step by Step
The given inequality is
$\Rightarrow \frac{x}{-5}\leq -5$
Multiply each side by $-5$. Reverse the inequality symbol.
$\Rightarrow -5\cdot (\frac{x}{-5})\geq -5\cdot (-5)$
Simplify.
$\Rightarrow x\geq 25$
Hence, the solution is $ x\geq 25$.
Use a close circle because $25$ is a solution.
Shade the number line on the right side.