I ned your help lol

What is the greater volume 72 quarts or 23 gallons

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18