Find the volume of the solid generated by revolving the region about the given line.The region in the second quadrant bounded above by the curve y = 9 - x2, below by the x-axis, and on the right by the y-axis, about the line x = 1
A. 
?
B. 
?
C. 
?
D. 
?
Answer: D
Mathematics
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Solve and check. Begin by using the addition or multiplication principles of equality to isolate the squared term. x2 - 225 = 0
A. 15 B. ±15 C. 113.5 D. ±14
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Graph the inequality.x + 2y > 0
A. 
B. 
C. 
D. 
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Add or subtract by first simplifying each radical (if needed) and then combining any like radical terms.7
+ 
- 6
A. 
B. 
+ 
C. 13
+ 
D. 
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Verify that the given point lies on the graph of the unit circle. Then use symmetry to find three other points that also lie on the graph of the unit circle.
A. 
, 
, and 
B. 
, 
, and 
C. 
, 
, and 
D. 
, 
, and 
Mathematics