200-gallon tank that is full of water needs to be drained and it drains at a constant rate of 15-gallons per minute.

Write a linear function representing the number of gallons of water left in the tank after x minutes. About how long will it take to empty the tank

Question

200-gallon tank that is full of water needs to be drained and it drains at a constant rate of 15-gallons per minute. 

Write a linear function representing the number of gallons of water left in the tank after x minutes. About how long will it take to empty the tank

anonymous · Answer

g = -15m + 200
15m = 200
=>m = 200/15 = 13.3 min