Give the coordinates of the point of intersection of the linear equations.2x + y = 23x + 2y = 2
A. (2, -2)
B. (2, 0)
C. (-2, 2)
D. (0, -2)
Answer: A
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Perform the indicated operation.(6x - 8) + (2x + 10)
A. 8x - 2 B. 8x2 + 2 C. 8x + 2 D. 12x2 - 80
Find the indicated set.Let A = {2, 5, 8, 17, 24} and B = { 1, 5, 18, 21, 24}.Find A ? B.
A. ? B. {1, 2, 5, 8, 17, 18, 21, 24} C. {5, 24} D. none of these
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 the equation of the least squares line to predict the percentage of defective bulbs in June.
A. 2.3% B. 2.15% C. 2.0% D. 2.20%
Solve the problem. Express your answer in scientific notation, and round to one decimal place. Approximately 7 × 103 employees of a certain company average $30,000 each year in salary. What is the total amount earned by all the employees of this company per year?
A. $21 × 109 B. $2.1 × 108 C. $2.1 × 109 D. $21 × 108