SOLUTION: You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system decreases by about 12%. How much caffeine will you have left in your system after 5 hours?

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Question 1181133: You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system decreases by about 12%. How much caffeine will you have left in your system after 5 hours?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
120%281-0.12%29%5Ex, x number of hours