MATH 112 Final: MATH 112 UW spr15Final
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I a rm that my work upholds the highest standards of honesty and academic integrity at the. University of washington, and that i have neither given nor received any unauthorized assistance on this exam. 100: your exam should consist of this cover sheet, followed by 6 problems on 7 pages. The correct answer with little or no supporting work may result in no credit. 1: (25 points) the levels of liquid in two vats are rising and falling. One vat contains ammonia and the instantaneous rate (in gallons per hour) at which its level is changing at t hours is given by a(t) = 3t2 + 42t 72. The second vat contains bleach and the amount of bleach (in gallons) at time t hours is given by. 20t + 105. (a) give the longest interval during which the level of ammonia is rising.
