Combine like terms, if possible.x + 10x
A. 11x2
B. 10x2
C. 11x
D. Cannot be simplified
Answer: C
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Solve.A plumber has 28 pieces of 12-foot PVC pipe. What is the total length of PVC that he has?
Fill in the blank(s) with the appropriate word(s).
Evaluate the expression, given x = -2, y = 3, and a = -4.-7x - 4y - 5a
A. 26 B. 15 C. 22 D. 7
Solve the problem.For some reason the quality of production decreases as the year progresses at a light bulb manufacturing plant. The following data represent the percentage of defective light bulbs produced at a light bulb manufacturing plant in the corresponding month of the year. 
Use linear regression to predict in which month the percentage of defective light bulbs would be 1.83%.
A. April B. February C. March D. May
Approximate to the nearest hundredth.
A. -6 B. 2.26 C. 1.41 D. 1.26