Solve the problem.In how many ways can you answer the questions on an exam that consists of 7 multiple choice questions, each of which has 3 answer choices?
A. 3027
B. 2187
C. 1957
D. 343
Answer: B
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Refer to the weighted voting system 
and the Banzhaf definition of power. (The four players are P1, P2, P3 and P4.)Which players are critical in the coalition {P1, P3, P4}?
A. P1 only B. P1 and P3 only C. None of the players D. All three players E. none of these
Solve the system of equations using Cramer's rule.2x + 7y = -26.38x - 5y = -22.7
A. (-4.4, 2.5) B. (-4.7, -2.2) C. (-4.4, -2.5) D. (-4.1, -2.8)
The NSC (Not So Consistent) Corporation has just completed its first year of business. The following chart shows its monthly profit (or loss). 
?
The absolute value of the profit or loss was smallest in
A. January B. February C. June D. December
Solve the problem.Find the measure of an angle such that the sum of the measures of its complement and its supplement is 174°.
A. 3° B. 43° C. 48° D. 6°