Answer: Cory can serve 32 drinks for parent night.
Step by step solution:
We need to have the same units, so first, start by converting the gallons to ounces:
1 gallon = 128 ounces
There are two 1-gallon jugs of juice, in total = 2 gallons of juice = 256 ounces of juice
Each cup can hold 8 ounces of juice. Divide the total ounces by 8.
Cory can serve 32 drinks for parent night.