Alcohol and Driving The concentration of alcohol in a person’s bloodstream is measurable. Suppose that the relative risk R of having an accident while driving a car can be modeled by an equation of the form R = e k x where x is the percent concentration of alcohol in the bloodstream and k is a constant. (a) Suppose that a concentration of alcohol in the bloodstream of 0.03 percent results in a relative risk of an accident of 1.4 . Find the constant k in the equation. (b) Using this value of k , what is the relative risk if the concentration is 0.17 percent? (c) Using the same value of k , what concentration of alcohol corresponds to a relative risk of 100? If the law asserts that anyone with a relative risk of having an accident of 5 or more should not have driving privileges, at what concentration of alcohol in the bloodstream should a driver be arrested and charged with a DUI? (d) Compare this situation with that of Example 10. If you were a lawmaker, which situation would you support? Give your reasons.
Alcohol and Driving The concentration of alcohol in a person’s bloodstream is measurable. Suppose that the relative risk R of having an accident while driving a car can be modeled by an equation of the form R = e k x where x is the percent concentration of alcohol in the bloodstream and k is a constant. (a) Suppose that a concentration of alcohol in the bloodstream of 0.03 percent results in a relative risk of an accident of 1.4 . Find the constant k in the equation. (b) Using this value of k , what is the relative risk if the concentration is 0.17 percent? (c) Using the same value of k , what concentration of alcohol corresponds to a relative risk of 100? If the law asserts that anyone with a relative risk of having an accident of 5 or more should not have driving privileges, at what concentration of alcohol in the bloodstream should a driver be arrested and charged with a DUI? (d) Compare this situation with that of Example 10. If you were a lawmaker, which situation would you support? Give your reasons.
Solution Summary: The author explains that the concentration of alcohol in a person's bloodstream is measurable and can be modeled by an equation of the form.
Alcohol and Driving
The concentration of alcohol in a person’s bloodstream is measurable. Suppose that the relative risk
of having an accident while driving a car can be modeled by an equation of the form
where
is the percent concentration of alcohol in the bloodstream and
is a constant.
(a) Suppose that a concentration of alcohol in the bloodstream of
percent results in a relative risk of an accident of
. Find the constant
in the equation.
(b) Using this value of
, what is the relative risk if the concentration is
percent?
(c) Using the same value of
, what concentration of alcohol corresponds to a relative risk of 100?
If the law asserts that anyone with a relative risk of having an accident of 5 or more should not have driving privileges, at what concentration of alcohol in the bloodstream should a driver be arrested and charged with a DUI?
(d) Compare this situation with that of Example 10. If you were a lawmaker, which situation would you support?
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