Provide an appropriate response.Given the problem 8 - [7 - (-8 - 19)], is the first step in solving to subtract -8 from -19?
A. Yes
B. No
Answer: B
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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?
Factor completely. If the polynomial is prime, then state this as your answer.x2 - x - 72
A. (x + 1)(x - 72) B. prime C. (x + 8)(x - 9) D. (x + 9)(x - 8)
Make a line graph of the data.Financial Aid recipients R for a four year college during the year x
A. 
B. 
C. 
D. 
Find the vertices of the hyperbola.(x + 2)2 - 81(y - 3)2 = 81
A. (-7, -3) and (11, -3) B. (9, 3) and (-9, 3) C. (-11, 3) and (7, 3) D. (-10, 4) and (8, 4)