A tank can hold 22,000 gallons of water, with an inflow pipe that allows 240 gallons to flow into the tank each minute and an outflow pipe that causes 320 gallons of water to flow from the tank each minute. If the tank is full, this graph describes the amount of water in the tank, W(m)
in gallons, m minutes since both pipes have been opened. The point (160, 9200) is on the following graph.