Graph the solution of the system.x + 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
Answer: A
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Find the standard deviation for the given data. Round your answer to one more decimal place than the original data.The numbers below represent the test scores of nine students. 28, 68, 27, 84, 35, 26, 83, 55, 27Find the standard deviation.
A. 26.5 B. 6.0 C. 24.8 D. 23.3
Refer to the weighted voting system 
and the Banzhaf definition of power. (The five players will be called P1, P2, P3, P4, and P5.)The number of coalitions having exactly three players is
A. 20 B. 5 C. 10 D. 1 E. none of these
Write the indicated event in set notation.The event that Betty and Emily are selected as board members when three board members are selected at random from the following group: Allison, Betty, Charlie, Dave, and Emily. [The possible outcomes can be represented as follows.ABCABDABEACDACEADEBCDBCEBDECDE]
A. 
B. 
C. 
D. 
Simplify.(-4x2y)5
A. -20x2y B. -20x2y5 C. (-4)5x10y5 D. (-4)5x7y5