Question

Please help me out

Which of these inequalities are equivalent to r > -11? Check all that apply.
-r < 11
3r < -33
3r > -33
-3r < 33
-3r > 33

Answer 1

A

C

D

Explanation:

Answer 2

Explanation:

`r>-11\qquad\text{change the signs}\\\\\boxed{-r<11}\qquad\text{multiply both sides by 3}\\\\\boxed{-3r<33}\\\\r>-11\qquad\text{multiply both sides by 3}\\\\\boxed{3r>-33}`