2. A treatment plant has a tank with a maximum capacity of 100,000 gal and is located initially at 75% capacity and at a concentration of 0.60lb / gal of organic material. I know establishes an inlet stream of pure water with a flow of 20,000 gal / hr and a stream of output of about 15,000 gal / hr. to. a. Graph how the amount of organic material Q (t) and total matter M (t) change in the tank as a function of time. (20 pts)