Mixture In Exercises 35-38, consider a tank that at time
A 200-gallon tank is full of a solution containing 25 pounds of concentrate. Starting at time
(a) Find the amount of concentrate Q (in pounds) in the solution as a function of t,
(b) Find the time at which the amount of concentrate in the tank reaches 15 pounds.
(c) Find the amount of concentrate (in pounds) in the solution as
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