Decide which of the 5 properties of a commutative group (closure, identity, inverse, associative, commutative) hold for the given system.
A. Closure, identity, associative, and commutative only
B. None of them
C. Closure, identity, inverse, and associative only
D. Closure, identity, and commutative only
Answer: D
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Find the median for the given sample data.The weight in pounds of ten randomly-selected football players are:
Find the median of these weights.
A. 250 lb B. 248 lb C. 245 lb D. 252 lb
Combine like terms.-9x - 4y + 3x - 9y - 4x
A. -10x - 4y B. -10x - 13y C. -13x + 10y D. -10x + 13y
Classify the equation as a contradiction, an identity, or a conditional equation.40m + 25 = 5(3m - 20)
A. Contradiction B. Identity C. Conditional
Use the statistical display to answer the question.The midterm test scores for the seventh-period typing class are shown below on a dot plot. 
What are the outliers?
A. 97, 98 B. 56 C. 86, 87, 88, 89, 90, 91 D. 69