During the time interval 0 less than or equal to t less than or equal to 4.5, water flows into tank a at rate of a(t) = (2t-5) + 5e^(2sint) during same time interval water flows into tank b at a rate of b(t) litters per ours both tanks are empty at t = 0 graphs intersect at .892 and 2.416 during time interval 0 less than or equal to t less than or equal to k water flows into tank b at a constant rate of 20.5 litters per hour what is the difference between the amount of water in tank a and the amount of water in tank b at time t = k