Answer:
Option B.
Explanation:
The given equation is

We need to find a word problem that can represented by the given equation.
The required problem is : A water filter filters 49 ounces of water per day. The first 8 ounces of water cannot be consumed and must be dumped out. How many days will it take the water filter to produce 89 ounces of consumable water?
Let y be the number number of days it take the water filter to produce 89 ounces of consumable water.
Total water filtered in y days = 49y
The first 8 ounces of water cannot be consumed and must be dumped out.
Total consumable water filtered in y days = 49y - 8
We need to produce 89 ounces of consumable water.

Therefore, the correct option is B.