Evaluate.7x + 8 for x = -2
A. -6
B. -22
C. 6
D. 22
Answer: A
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For an election with candidates A, B and C, we have the following preference schedule:
Which fairness criterion is violated in this election using the Borda count method if candidate B drops out of the election and a reelection is held?
A. monotonicity criterion B. Condorcet criterion C. independence-of-irrelevant-alternatives criterion D. majority criterion E. none of these
Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.ln 
A. ln e3 + ln 8 B. ln e3 - ln 8 C. 3 + ln 8 D. 3 - ln 8
Solve the system of equations.x - 4y + z = 174x - y - z = 23
A. 
B. 
C. 
D. 
Factor when possible. If the polynomial is prime, say so.x2 + 6x - 27
A. (x - 9)(x + 1) B. (x + 9)(x - 3) C. (x - 9)(x + 3) D. prime