Plz a. b. And c.

4. A particular therapeutic drug has a half life of 3.8 hours in the human body and the typical dose is 10 mg. a. Write a differential equation for the quantity of drug, Q, in the bloodstream. b. Solve the differential equation to nd an equation for the function Q) that will predict the quantity of the drug in the bloodstream at any time. c. How much of the drug is still in the bloodstream 12 hours after ingesting the original dose