Moria bought $.65 worth of stamps she paid for them for coins. What coins did she use? Use the guess and check strategy-?

The equation respenting the left table is

What is the greater volume 72 quarts or 23 gallons

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?