The number line that represents the solution set of the inequality can be seen below.
<h3>How to graph the inequality?</h3>
Here we have the inequality:
15 > n ≥ 3
Then we need to have a open dot at the number 15 on the number line, and then a line that goes to the left until the value 3, where we must have a closed dot (because n = 3 is a solution of the inequality). The number line can be seen below.