Solve the system. 2x + z = -11 w + x + 6y - z = 182w + y + 6z = -20 w + x + 3y = 7
A. (4, -3, 2, -5)
B. (4, -3, 6, -5)
C. (8, -6, 6, -10)
D. (4, -6, 4, -10)
Answer: A
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Solve the problem.An election is held in which each member ranks the candidates from first to third. The preference schedule below shows the results of the preliminary nonbinding ballots with candidates A, B, and C.
A second election is then held, which yields the following preference schedule:
If a run-off of the top two candidates is used to determine the winner, is Fairness Criterion 3 satisfied?
A. yes B. no
Find the first term a1 and the common difference d of the arithmetic sequence.4, 16, 28, 40, 52, . . .
A. a1 = 4, d = 12 B. a1 = 4, d = 4 C. a1 = 12, d = 8 D. a1 = 12, d = -12
Verify the identity.
= 
What will be an ideal response?
Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this.y - 3x = 113y - x = 10
A. Infinite number of solutions
B. 
C. No solution
D. 