Police use blood alcohol content (BAC) to measure the percent concentration of alcohol
Chapter 9, Problem 1(choose chapter or problem)
Police use blood alcohol content (BAC) to measure the percent concentration of alcohol in a persons bloodstream. In most states, a BAC of 0.08 percent means a person is not allowed to drive. Each hour after drinking, a persons BAC may decrease by 15%. If a person has a BAC of 0.18, how many hours will he need to wait until he can legally drive?
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