A chain smoker smokes five cigarettes every hour. From each cigarette, 0.4 mg of nicotine is absorbed into the person’s bloodstream. Nicotine leaves the body at a rate proportional to the amount present,
with constant of proportionality -0.346 if t is in hours.
a. Write a differential equation for the level of nicotine in the body, N, in mg, as a function of time, t,
in hours.
b. Solve the differential equation and graph the solution. Initially there is no nicotine in the blood