A. It describes guidlines for moral behavior.
The same would be the right one
Answer:
C: Divide both sides by 3
F: Division property of equality
Step-by-step explanation:

Let the side of one square be x.
The maximum perimeter will be when the squares will be lined end to end.
This will be:
x + 9x + 9x + x
= 20x
The perimeter of the figures formed will be less than or equal to 20x.