Answer :
r is greater than or equal to 20
you’d add 9 on both sides to isolate r .
you’d add 9 on both sides to isolate r .
Answer:
r [tex]\geq[/tex] 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 [tex]\geq[/tex] 20