Solve: 
A.
B.
C.
D.
Answer: A
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Collect like terms and write in descending order.-4x9y10 + 6x9y10 - 5x9y10 + 8x9y10 + 8x9y10
A. 21x9y10 B. Can't be simplified C. 13x9y10 D. -3x9y10
1.432 to the nearest hundredth
A. 1.44 B. 1.42 C. 1.4 D. 1.43
Solve the problem.Customer relations specialists need to respond to email messages in addition to taking calls. The department is thinking of creating a new position that will solely handle email. The supervisor records the number of email messages received for eight consecutive days: 6, 2, 25, 15, 23, 48, 37, 36. Find the median number of email messages received.
A. 24.5 email messages B. 24 email messages C. 25 email messages D. 23 email messages
Decide whether or not the set is closed under addition.{n ? N: n ? 27}
A. Closed B. Not closed