Find the volume of the solid generated by revolving the region about the given line.The region in the first quadrant bounded above by the line y = 1, below by the curve y = 
, and on the left by the y-axis, about the line y = - 1
A. 
?2 - 
?
B. 
? - 
C. 
?2 - 
?
D. 
?2 + 
?
Answer: A
Mathematics
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Simplify by combining pairs of like terms.-28p - 6p2 + 12p - 7p2
A. 16p - 13p2 B. -16p + 13p2 C. -16p - 13p2 D. -40p - 13p2
Mathematics
Solve the problem.A spherical tank of water has a radius of 
, with the center of the tank 
above the ground. How much work will it take to fill the tank by pumping water up from ground level? Assume the water weighs 
Give your answer to the nearest ft ? lb.
A. 28,229,095 ft ? lb B. 11,291,638 ft ? lb C. 7,188,480 ft ? lb D. 22,583,276 ft ? lb
Mathematics
Use the prime factorization method to find the LCM of the given numbers.56 and 96
A. 224 B. 168 C. 1344 D. 672
Mathematics
Given matrices A and B, find the indicated matrix if possible.A = 
, B = 
Find AB.
A. 
B. 
C. AB is not defined.
D. 
Mathematics