Answer
$w\leq 25$
The graph is shown below.
Work Step by Step
The given inequality is
$\Rightarrow 20\geq \frac{4}{5}w$
Multiply each side by $\frac{5}{4}$.
$\Rightarrow \frac{5}{4}\cdot 20\geq \frac{5}{4}\cdot \frac{4}{5}w$
Simplify.
$\Rightarrow 25\geq w$
Hence, the solution is $w\leq 25$.
Use a close circle because $25$ is a solution.
Shade the number line on the left side.
