Explanation:
To solve the inequality \(\frac{n}{5} \leq -20\), you can multiply both sides by 5 to get rid of the denominator:
\[ n \leq -20 \times 5 \]
\[ n \leq -100 \]
Now, let's graph this on a number line. A solid dot at -100 indicates "equal to," and an arrow to the left indicates "less than."
```
----●----------------->
-100
```
So, the solution to the inequality is \( n \leq -100 \), and it's represented by a solid dot at -100 with an arrow to the left