Let Cstd be the concentration of a drug in the
Chapter , Problem 95(choose chapter or problem)
Let Cstd be the concentration of a drug in the bloodstream. As the body eliminates the drug, Cstd decreases at a rate that is proportional to the amount of the drug that is present at the time. Thus C9std 2kCstd, where k is a positive number called the elimination constant of the drug. (a) If C0 is the concentration at time t 0, ind the concentration at time t. (b) If the body eliminates half the drug in 30 hours, how long does it take to eliminate 90% of the drug?
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