Ariana picked 21 cups of ripe strawberries from her garden. She plans to use all of the strawberries to make strawberry jam. Her recipe calls for 2 cups of sugar for every 7 cups of strawberries. How much sugar does Ariana need to use?

What is the volume of the sphere shown below with a radius of 3?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?