thanyaboon8118 thanyaboon8118

15-09-2022
Mathematics

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The amount of a drug (in mg) in a patient's bloodstream t hours after the first injection is
[tex]100 \times {(0.8)}^{t} [/tex]
. If injections are to be repeated at 12-hourly intervals, what should the dose be (to the nearest mg) for the second and subsequent injections to bring the total in the bloodstream back to 100mg each time?

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