Solve the problem.The revenue achieved by selling x graphing calculators is figured to be 
dollars. The cost of each calculator is 
How many graphing calculators must be sold to make a profit (revenue - cost) of at least $123.50?
A. {x ? 17 < x < 23}
B. {x ? 15 < x < 17}
C. {x ? 14 < x < 18}
D. {x ? 13 < x < 19}
Answer: D
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Evaluate.4(x + y + z) and 4x + 4y + 4z when 
and 
A. 156, 156 B. 114, 138 C. 96, 156 D. 96, 96
Solve.
- 
= 1
A. No solution B. 3 C. -3, -1 D. 3, -1
Expand the expression using the Binomial Theorem.(2x + y)6
A. 64x6 + 192x5y + 240x4y2 + 160x3y3 + 240x2y4 + 192xy5 + 64y6 B. 64x6 + 192x5y + 240x4 y2 + 160x3 y3 + 60x2y4 + 12xy5 + y6 C. 2x6 + 12x5y + 30x4 y2 + 40x3y3 + 12xy5 + y6 D. 64x6 + 192x5y + 480x4y2 + 960x3y3 + 1440x2y4 + 12xy5 + y6
Match the graph with the most appropriate sentence.
A. For his commute to work, Dwight drove 30 min to the train station, rode the express for 20 min, and then walked 5 min to his office. B. For her commute to work, Pam drove walked 30 min to the train station, rode the express for 20 min, and then drove 10 min to her office. C. For her commute to work, Pam drove walked 10 min to the train station, rode the express for 20 min, and then drove 10 min to her office. D. For his commute to work, Dwight drove 10 min to the train station, rode the express for 20 min, and then walked 10 min to his office.