Which situation could NOT represent a proportional relationship?

Question 1 options:

The weight in x weeks of a puppy that gains 2 pounds per week if it starting weight is 8 pounds.


The cost of purchasing p pounds of bananas for $0.55 per pound.


The number of gallons of water in x barrels with 50 gallons of water in each barrel


The amount an employee who makes $9.25 per hour earns in h hours