Super easy ! 10 points.

which property of equality is represented?

8b = 8b
a) reflexive property
b) symmetric property
c) transitive property
d) commutative property

This question is asking for the circumference of these circles, since it is asking for the edge of the pie. The formula for the circumference of a circle can be found by using or

With that being said, let's get solving!
The first question only asks us to do 3.14 * 5, which is 15.7 inches.
The second question requires us to add a 2 into the equation. So our equation would be 3.14 * 7, which is 21.98 inches.
The third question gives us the diameter again, so our equation would be 3.14 * 9. The answer is 28.26 inches.