1. The problem statement, all variables and given/known data A medicine is administered to a patient. The amount, M, of the medicine in milligrams, in 1 mL of the patient's blood t hours after the injection is given by M(t) = -1/3t^2 + t where 0<=t<=3 Find the rate of change of teh amount, M, 2 hours after the injection. 2. Relevant equations 3. The attempt at a solution No idea.