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.(a) Suppose that a concentration of alcohol in the blood of 0.07 results in a 12% 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 0.012?(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 = 12.51 |
(c) 0.24
(d) 0.07
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Add or subtract.-50 - 50
A. 100 B. 0 C. -150 D. -100
Sketch the graph and show all relative extrema and inflection points.y = x4 - 2x2 + 3
A. 
Relative maximum: (0, 3)
Relative minima: (-1, 2), (1, 2)
Inflection points: 
, 
B. 
Relative maximum: (0, 3)
Relative minima: (-1, 2), (1, 2)
Inflection points: 
, 
C. 
Relative minimum: (0, -3)
Relative maxima: (-1, -2), (1, -2)
Inflection points: 
, 
D. 
Relative maximum: (0, 3)
Relative minimum: 
Inflection point: 
Provide an appropriate response. Identify the sentence that could not be the verbal interpretation of the symbolic statement 2x - 5 = 7.
A. Five less than two times a number is seven. B. Twice a number decreased by five is seven. C. Seven is five less than the product of two and a number. D. Twice the difference between a number and five is seven.
Graph the function.f(x) = x 
A. 
B. 
C. 
D. 