Final answer:
Carlos can serve up to 48 cups of juice at the party by converting the 3 gallons of juice he bought using the conversion rate of 1 gallon to 16 cups.
Step-by-step explanation:
The student asks about the conversion of gallons to cups to determine the maximum number of cups that can be served from 3 gallons of juice. To find the answer, we need to know the conversion rates between gallons and cups.
There are 16 cups in 1 gallon. So for 3 gallons, we calculate:
3 gallons x 16 cups/gallon = 48 cups.
Therefore, Carlos can serve up to 48 cups of juice at the party.