A certain medication is eliminated from the bloodstream at a rate of about 12% per hour. The medication reaches a peak level in the bloodstream of 40 mg. Predict the amount, to the nearest tenth of a milligram, of the medication remaining 2 hours after the peak level and 3 hours after the peak level.

Question

A certain medication is eliminated from the bloodstream at a rate of about 12% per hour.  The medication reaches a peak level in the bloodstream of 40 mg.  Predict the amount, to the nearest tenth of a milligram, of the medication remaining 2 hours after the peak level and 3 hours after the peak level.

ivettef365 · Answer

do you have choices

anonymous · Answer

No, you have to write out your response.

ivettef365 · Answer

ok, I would take 12% of 40, that would be the amount it eliminates per hour

anonymous · Answer

okay..

anonymous · Answer

I got 35.2... lol Probably did that wrong

ivettef365 · Answer

to get 12% of 40, you can multiply 12 x .40

anonymous · Answer

4.8?

anonymous · Answer

-30.4 is what I got

ivettef365 · Answer

no wait, it is 12% of 40 = 4.80
40 - 4.80 = 35.20  after one hour now 
35.20 x .12 = 4.224
now subtract 35.20 - 4.224 =  ??? after 2 hours

anonymous · Answer

30.976

ivettef365 · Answer

the answer is to the nearest 10nth, so after 2 hours = 30.1

now for 3 hours, multiply 30.976 x .12 and subtract from 30.976

anonymous · Answer

....What... Why woul... okay lemme try XD

ivettef365 · Answer

the question is after 2 hours then after 3 hours

anonymous · Answer

I got -27.25

ivettef365 · Answer

30.976 - 3.717 = 27.25

so they want the answer to the nearest 10th that would be 27.3

anonymous · Answer

okay, thank you!

ivettef365 · Answer

yw :)