Question

A certain drug has a half-life of 2 hours in the bloodstream. The label says to take the drug every six hours. About how much of the drug will be in the bloodstream a month after the patient begins taking 700 mg every six hours?
bobpursley
in three halflives, you should have 1/8 left.

amountremaing=original*(1/2)^3 or

amount remaining= original*e^-.693*6/2

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