Some mathematics professors would like to purchase a $350 microwave oven for the department workroom. If 2 of the professors don't contribute, everyone's share will increase by $20. How many professors are in the department?
?
A. 21
B. 7
C. 26
D. 9
E. 14
Answer: B
Mathematics
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Find the area enclosed by the given curves.y = - 4sin x, y = sin 2x, 0 ? x ? ?
A. 16
B. 
C. 4
D. 8
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Determine whether the nonincreasing sequence converges or diverges.an = 
A. Diverges B. Converges
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Convert to scientific notation.160,000
A. 1.6 × 10-4 B. 1.6 × 104 C. 1.6 × 10-5 D. 1.6 × 105
Mathematics
Provide an appropriate response.
Elbows are used to form bends in rigid pipe and are measured in degrees. What is the angle of bend of the elbow in the installation shown to the nearest whole degree? 
A. 41° B. 53° C. 49° D. 37°
Mathematics