This document discusses a math problem involving pharmacokinetics. It states that an initial drug mass (m0) decreased over time according to the exponential decay law m(t)=m0-e-kt, where k is the elimination constant 0.33*ln(3.23). It is given that after 3 hours there was 9.7g of drug remaining, and the task is to calculate the initial mass m0 and plot the drug mass over 5 hours.