You water the plants in your classroom at a constant rate. After 5 seconds, your watering can contains 58 ounces of water. Fifteen seconds later, the can contains 28 ounces of water.
a. Write an equation that represents the amount y (in ounces) of water in the can after x seconds.
b. How much water was in the can when you started watering the plants
c. When is the watering can empty