Solve the problem.The Future Laureates is a rock band planning to go on tour across the U.S. using their newly acquired platinum coach tour bus. It turns out their lead guitarist has car sickness. Having already set the dates and venues for the tour, the band wants to minimize their time on the road. A nearest-neighbor tour is found with a total travel time of 126 hours. Suppose that they later find out that the travel time of an optimal tour is 109 hours. What was the relative error of the nearest-neighbor tour? Express your answer as a percentage, rounded to the nearest tenth of a percent.
A. 13.5%
B. 24.8%
C. 15.6%
D. 17%
E. 5.6%
Answer: C
Mathematics
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A. 4,494 B. 4,384 C. 4,484 D. 3,484
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Simplify the expression. Assume that all variables are positive when they appear.
- 
A. 2 - 3
B. 5
C. 3
- 2
D. 2
- 3
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Find the exact value of the expression.sec (-1215°)
A. 
B. - 
C. -1
D. - 
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Multiply.(-4p4r)(5p2qr5)(-2q5r4)
A. - 40p6q6r10 B. 40p5q7r10 C. - 40p5q7r10 D. 40p6q6r10
Mathematics