Problema Solution
A bathtub is draining at a constant rate. After 2 minutes, it holds 30 gallons of water. Three minutes later, it holds 12 gallons of water. Write an equation that represents the number yy of gallons of water in the tub after xx minutes.
Answer provided by our tutors
y = 30 - 12 = 18 gal
x = 3 - 2 = 1 min
The draining rate is 18 gallons per minute.