a manufacture uses a tank to supply water to his machines while they are working. when the machines are on the tank losses 1.5 gallons of water an hour. At the same time 1 gallon os water is umped into the tank from a well. write an equation that models the amount of water (w) in the tank for any hour(h) that the machines are on. the tank starts full with 150 gallons of water in it.