Solve the inequality.

r – 9 ≥ 11

Group of answer choices

r ≥ 20

r ≤ 20

r ≥ 2

r ≥ 11

r 20

Step-by-step explanation:

You have to isolate the variable on one side, so you need to add 9 on both sides.

r - 9 + 9 = r - 0 = r

11 + 9 = 20

So, r 20

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.