Question

solve the inequality and graph the solution.
20 ≥ 10b
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 b

Divide both sides of $20\geq10b$ by 10. So we have $\frac{20}{10}\geq\frac{10b}{10}$, which simplifies to $2\geq b$ or $b\leq2$.

Answer:

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