When a certain drug is administered to a patient, the number of milligrams remaining
in the patient's bloodstream after t hours is D(t) = 60e^-0.15t
a. How many milligrams of the drug is administered to the patient initially?
b. How many milligrams of the drug remain in the patient in the patient's
bloodstream after 3 hours?
c. Draw a graph of D(t)? (graphing paper)