Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by x = 
, x = 0, y = - 3, y = 3
A. 
?
B. 6?
C. 
?
D. 
?
Answer: A
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Find the distance between points P1 and P2.P1(-1, -4, -6) and P2(5, -2, -9)
A. 6
B. 5
C. 
D. 7
Evaluate the indicated function with the given information.Find tan 2x if cos x = - 
(in second quadrant).
A. 
B. 
C. 
D. 
Find the mean. Round to the nearest tenth unless otherwise stated.Scores on an aptitude test: 576, 561, 346, 356, 547, 341, 358, 553, 470, 482
A. 468.4 B. 459 C. 476 D. 450
Solve the problem.A bookstore is having a sale. All books included in the sale have a colored sticker on them to indicate the sale price. There are green stickers, red stickers, and orange stickers. Bob, Sue, and Fred each make purchases of books that are on sale. Each row of the table gives information about the numbers of book purchases and the total cost of the purchase (before taxes) . 
Use this information to set up a matrix equation of the form 
which can be solved to determine the price for each type of sale book. Solve this matrix equation to find the price
of a book with a green sticker.Use the fact that for A = 
, A-1 = 
.
A. $4.99
B. $4.89
C. $4.91
D. $4.96