Final Answers:
a. Total cups of punch: 1. x + y + 2x + (x - 5) = 4x + y - 5
b. Orange juice - lemon-lime soda: 2. 2x - (x - 5) = x + 5
c. Cups per pitcher: 3. (4x + y - 5) / 12
Step-by-step explanation:
Total number of cups:
Pineapple juice: x cups
Cranberry juice: y cups
Lemon-lime soda: x - 5 cups
Orange juice: 2x cups
Total: x + y + 2x + (x - 5) = 4x + y - 5
Difference in orange and lemon-lime soda:
Orange juice: 2x cups
Lemon-lime soda: x - 5 cups
Difference: 2x - (x - 5) = x + 5
Cups per pitcher:
Total cups: 4x + y - 5
Number of pitchers: 12
Cups per pitcher: (4x + y - 5) / 12