Answer:
D
Step-by-step explanation:
that what I think but not sure
Answer:
Both rectangles and squares have four sides of equal length
You'll need to isolate 9a on the left side of this equation
Please add 7 to both sides of the eqn, obtaining 9a = 117.
Solve for a by dividing both sides by 9: a = 117/9 = 13 (answer)
