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 = 5ekxwhere x is the variable concentration of alcohol in the blood and k is a constant.Suppose that a concentration of alcohol in the blood of 0.07 results in a 10% risk 
of an accident. Find the constant k in the equation.Using this value of k, what is the risk if the concentration is 0.11?
What will be an ideal response?
k = 
? 9.90; about 14.9%
Mathematics
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A. 134 B. 144 C. 136 D. 124
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Find the area of the region specified in polar coordinates.the region enclosed by the curve r = 9 - 6 cos ?
A. 
?
B. 
?
C. 117?
D. 99?
Mathematics
A deck of cards contains 52 cards. These cards consist of four suits (hearts, spades, clubs, and diamonds) of each of the following: 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, king, and ace. If a card is chosen from a deck of cards, find the probability of each event.Selecting the 9 of clubs
A. 
B. 
C. 
D. 
Mathematics
Use both properties of equality to solve the equation.22 = 2 - 5m
A. -15 B. -2 C. -4 D. -19
Mathematics