Answer: the amount in ounces of juice that George need to buy is 364 ounces
Step-by-step explanation: first we we need to keep in ind that 1 cup is equal to 8 ounces after that, we can calculate the value in ounces for 1.75 cups.
then we get the following equation
1.75 cups * (8 ounces / 1 cup) = 14 ounces
after we get this value, we need to multiply number of ounces that we get in the past equation by the number of people that will be attending the class party, and this number is 26
then we get this equation
26 people *( 14 ounces/1 people) = 364 ounces
and this is the amount in ounces of juice that George need to buy, the answer is 364 ounces