Question

solve the inequality and graph the solution.
9c ≤ 18
plot the endpoints. select an endpoint to change it from closed to open. select the middle of the segment, ray, or line to delete it.

Explanation:

Step1: Isolate the variable c

Divide both sides by 9: $9c\div9\leq18\div9$

Step2: Simplify the inequality

$c\leq2$

Answer:

The solution of the inequality is $c\leq2$. On the number - line, plot a closed circle at 2 (since the inequality is $\leq$) and draw a ray to the left of 2.