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The depth of the water in Harsha's bird bath is changing at a rate of r(t)=0.25t-0.1r(t)=0.25t−0.1r, left parenthesis, t, right parenthesis, equals, 0, point, 25, t, minus, 0, poin millimeters per hour (where tt is the time in hours). At time t=t=0t, equals, 0, the depth of the water is 353535 millimeters.

A. 35+∫33r(t)dt

B. 35+∫34r(t)dt

C. 35+∫23r(t)dt

D. 35+∫03r(t)dt

Asked by Anou, Last updated: Jan 13, 2020

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