Answer:
[tex]r\geq -20[/tex]
Step-by-step explanation:
We have [tex]-\frac{r}{2} \leq 10[/tex]. We can start by multiplying both sides by 2 to get rid of the fraction. This gets us to [tex]-r\leq 20[/tex]. After, we should multiply each side by -1 to get rid of the negative variable. This gets us to [tex]r\geq -20[/tex]. Make sure to remember to flip the inequality sign, because if you multiply/divide by a negative number, you have to flip the sign.
I hope this helped!
