Answer:
35 - (m/4)
Explanation:
If the leak rate is 1/4 gallons per minute, the leak rate in “m” minutes would be m*(1/4), which is m/4. For the number of gallons left in the tank, you’ll have to subtract how many gallons (m/4) it leaked from the 35-gallon tank.
So it’s 35 - (m/4).