""" A veterinarian has instructed Harrison to give his 75 -pound dog one 325-milligram aspirin tablet for arthritis period the amount of aspirin, A, remaining in the dog's body after ten minutes can be expressed by A(t) = 325(1⁄2)^t/15. How long will it take for the amount of aspirin to drop to 50mg? Solve algebraically. 50 = 325(1/2)^t/15 2/13 = 1/3^t/15 log1/2(2/13) = t/15 15 * log1/2(2/13) = t t = 40.507 about 40.5 minutes """