Answer:
y = 7 ounces
Explanation:
A bottle holds 15 ounces of water.
Jada drank 8.5 ounces of water. This means that Jada drank 8.5 ounces of water from the 15 ounces of water that was initially in the bottle.
Let the amount of water left in the bottle be y ounces. This means that the total amount of water in the bottle initially = the sum of the 8.5 ounces of water that she drank + the y ounces of water that is left in the bottle. Therefore,
15 ounces = 8.5 ounces + y ounces left
y ounces of water left = 15 ounces - 8.5 ounces
y = 6.5 ounces