List the symmetries of the given function, if there are any. Otherwise, state "No symmetry".f(x) = 
A. y-axis
B. x = 8
C. x = -8, origin
D. x = -8
Answer: D
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Evaluate the improper integral.
A. 
B. 
C. 
D. 
Use the discriminant to find what type of solutions (two rational, two irrational, one rational, or two nonreal complex) each of the following equations has. Do not solve the equation.x2 - 5x + 7 = 0
A. one rational solution B. two rational solutions C. two irrational solutions D. two nonreal complex solutions
Solve the problem.In a certain city, the cost of a taxi ride is computed as follows: There is a fixed charge of $2.80 as soon as you get in the taxi, to which a charge of $2.15 per mile is added. Find an equation that can be used to determine the cost, C(x), of an x-mile taxi ride, and use this equation to find the cost of a 7-mile taxi ride.
A. $18.75 B. $17.85 C. $18.03 D. $17.73
Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.(ab7 c)(ab5 )(ab5c)
A. ab40 c2 B. a3b12 c C. gb10c2 D. a3b17 c2