a factsheet on caffeine dependence from john Hopkins medical center states that the half life of caffeine is the body between 4 and 6 hours. assuming that typical half-life of caffeine in the body is 5 hours for the average person and typical cup has 128 mg of caffeine.
A write the decay function B. find the the hourly rate at which the caffeine leaves the body C. how long does it take till 15 mg of caffeine is in the body