Solve the problem.Find the volume of the solid generated by revolving the region in the first quadrant bounded by the x-axis and the curve y = x cos x, 0 ? x ? ?/2 about the y-axis.
A. 
- 8?
B. 
- 4?
C. 
+ 2?2 - 4?
D. 
- 4?
Answer: D
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Choose the best wording for the question in the study.A recent newspaper article stated that Snazzy's is the most popular restaurant in the city. The city council decided to sponsor its own survey to determine the accuracy of the article. Which of the following survey questions will give the most accurate results?
A. Do you agree that Snazzy's is the most popular restaurant in the city? B. Which restaurant do you think is the most popular in the city? C. Which restaurant in the city do you think is the most crowded? D. Which restaurant in the city do you visit most often?
Determine whether the statement is true or false. 33 ? {1, 2, 3, ..., 40}
A. True B. False
Identify the equation as either an identity or not.sin 2x sin 2y = cos2(x + y) - cos2(x - y)
A. Not an identity B. Identity
Perform the indicated operation and simplify.4
+ 4
A. 81
B. 9
C. 8
D. 9