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  • 28-03-2017
  • Mathematics
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HELP???
The concentration of a drug in the bloodstream decreased by 18% every hour. If an initial dose of 25mg. was administrated, how much of the drug remains in the bloodstream after 4 hours? After what length of time will 1% of the original dose remain???????

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irspow
irspow irspow
  • 28-03-2017
d(t)=25(0.82)^t

d(4)=11.3mg
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