Solve the problem.The concentration of alcohol in a person's blood is measurable. Suppose that the risk R (given as a percent) of having an accident while driving a car can be modeled by the equation R = 4ekxwhere x is the variable concentration of alcohol in the blood and k is a constant.(a) Suppose that a concentration of alcohol in the blood of 0.09 results in a 14% risk 
of an accident. Find the constant k in the equation.(b) Using this value of k, what is the risk if the concentration is 0.014?(c) Using the same value of k, what concentration of alcohol corresponds to a risk of 100%?(d) If the law asserts that anyone with a risk of having an accident of 12 or more
should not have driving privileges, at what concentration of alcohol in the blood should a driver be arrested and charged with a DUI?
What will be an ideal response?
| (a) | k = 13.92 |
(c) 0.23
(d) 0.08
Mathematics
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A. -12 B. -36 C. 36 D. 12
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A. ±1, ±3, ± 
B. ±1, ± 
, ±2, ± 
, ±3, ±6
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, ±3, ± 
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- 
+ 
- 
+ 
- 
A. 
B. 
C. 
D. 
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