C and D both have variables because u don’t know what the x stands for
( I hope this helped)
Answer:
452.16
Step-by-step explanation:
12^2 x 3,14

Since it can be expressed as fraction, it's a rational number.

you just divide 2 by 10, which is
.2
Answer:
8 gallons were eaten.
Step-by-step explanation:
You would multiply the percentage by the amount of gallons. So 80% would be 0.8 so it would be 0.8 multiplied by 10 which gives you 8.