Use a graphing calculator to solve the system of equations. Round your solution to one decimal place.
A. (7.9, 2.4, 9.0, 12.3)
B. (3.6, 1.1, 4.1, 5.6)
C. (4.3, 1.3, 4.9, 6.7)
D. (3.2, 1.0, 3.7, 5.0)
Answer: B
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Find the vertical asymptote(s), if any, of the graph of the rational function. f(x) = 
A. no vertical asymptote B. x = -9 C. x = 1, x = -1 D. x = 9
Evaluate the expression by hand. Variables represent any real number.
A. 2x2 B. 64 C. 4x2 D. -2x2
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?
Use the quotient rule to find the derivative.g(t) = 
A. g'(t) = 
B. g'(t) = 
C. g'(t) = 
D. g'(t) = 