Barrons AP Calculus - David Bock

dmanu (dmanu) 2022-08-30 04:58:57 UTC #1

(C) If Q is the amount at time t. then Q = 40e−kt. Since Q = 20 when t = 2, k = −0.3466. Now
find Q when t = 3, from Q = 40e−(0.3466) 3, getting Q = 14 to the nearest gram.

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