For this case we have the following data:
Drained 3.5 Liters in 4 days. If we want to know the volume of water per day, we make a rule of three:
3.5 Liters -----> 4days
x Liters --------> 1 day
Where x represents the amount of water drained each day.
So, we have to:

Liters per day
So, the average change in water volume each day is:
Liters per day
Answer:
Liters per day
Answer: Its A EZ
Step-by-step explanation:
I agree with the person above.
The sum of negative eighteen and a number is eleven:
-18 + x = 11 which is the same as A. x - 18 = 11; x = 11 + 18; x = 29