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 2x + y = 4, below by the x-axis, and on the left by the y-axis, about the line x = -2
A. 
?
B. 
?
C. 
?
D. 
?
Answer: A
Mathematics
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Use the graph to solve the problem.Find the rate of change in the temperature.
A. 2 degrees per hour B. 3.5 degrees per hour C. 3 degrees per hour D. 2.4 degrees per hour
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Use the information given in the figure.
How many are in B but not in A?
A. 18 B. 27 C. 16 D. 23
Mathematics
Give the center and radius of the circle. Then sketch its graph.(x + 3)2 + (y - 5)2 = 9
A. center (- 3, - 5), r = 3
B. center (3, - 5), r = 3
C. center (- 3, 5), r = 3
D. center (3, 5), r = 3
Mathematics
Perform the requested operation or operations. Find the domain of each.f(x) = 
and g(x) = | x - 2 |Find fg.
A. | x2 + 2x - 8 |; domain: (-?, ?)
B. 
; domain: (-?, -4) ? (2, ?)
C. | x - 2 |
; domain: (-4, ?)
D. | x - 2 |
; domain: (2, ?)
Mathematics