Collect like terms.-15y - 6x - 9x
A. -15y - 15x
B. -15y - 3x
C. -15y + 3x
D. -30xy
Answer: A
Mathematics
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Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place than that used for the observations.The five sales people at Southwest Appliances earned commissions last year of 
and $32,000. Find the mean commission.
A. $27,550 B. $29,000 C. $31,900 D. $30,450
Mathematics
Add.5.164 + (-7.605)
A. -12.769 B. -12.669 C. 2.441 D. -2.441
Mathematics
Add or subtract and write the resulting polynomial in descending order of degree.
+ 
A. 3x3 + 
x2 + x - 
B. 3x3 + 
x2 + x - 
C. 3x3 - 
x2 + x - 
D. 2x3 + 
x2 + x - 
Mathematics
Write the following in interval notation.{x| -7 ? x < 5}
A. [-7, 5] B. [-7, 5) C. (-7, 5) D. (-7, 5]
Mathematics