The quantity of a drug, Q mg, present in the body thours after an injection of the drug is given is Q=f(t) = 80te-0.5t Find f(1), f'(1), ƒ(4), and f'(4). Give units and interpret the answers. Round your answers to two decimal places. f(1) = i f'(1) = i f(4) = i f'(4) = i Interpretation of fƒ(1) and f'(1): One hour after the drug was administered, the quantity of drug in the body is approximately Interpretation of f(4) and f'(4): Four hours after the drug was administered, the quantity of drug in the body is approximately eTextbook and Media