i will give you brainlist if you have a valid answer

Answer:
A. For 16 cups of lemonade he needs 80 cups of water.
B. The rate of change is 1/5 for every cup of lemonade it needs 5 cups of water.
C. He should use the second recipe because 13+3=16 and 65+15=80
He will have enough for 16 cups of lemonade mix and 80 cups of water.
Step-by-step explanation: