Answer:
20
Step-by-step explanation:
Let
be equal to the number that 24 is 120% of.

Divide both sides by 1.2 to isolate 

Therefore, 24 is 120% of 20.
I hope this helps!
Answer:
D- The set of whole numbers were 1<_x<18
Step-by-step explanation:
How many levels are in the game? You would take that number and multiply it by 0.72 to find 72% of it.
The circumference when the diameter is 18 = 18pi
The circumference when the diameter is 6 = 6pi
18pi/6pi=3
The circumference will become a third of what it was.
Hope this helps!