Does anyone understand this? I have a few minutes so if you can respond!

Answer:
A. r = 9
Step-by-step explanation:
r/3 + 5 [tex]\leq[/tex] 8
Substitute.
9/3 + 5 [tex]\leq[/tex] 8
Solve.
3 + 5 [tex]\leq[/tex] 8
8 [tex]\leq[/tex] 8
8 is equal to or lesser than the 8 of the opposite side.