Find the area or volume.Find the volume of the solid generated by revolving the region under the curve 
in the first quadrant about the y-axis.
A. 4?3
B. 4?
C. 16?
D. 2?
Answer: B
Mathematics
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Factor the GCF from the polynomial.-9x2 - 6xy
A. -3x(3x + 2y) B. 3x(3x - 2y) C. -3(3x2 + 2xy) D. -3x(3x - 2y)
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Use the fundamental identities to simplify the expression.cos x tan x
A. 1 B. cos x C. sin x D. cot x
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Match the equation with the correct graph.y = 3x2 + 12x + 9
A. 
B. 
C. 
D. 
Mathematics
Use a graphing calculator to solve the system.-3x + 3y = 04x + 2y = 15
A. {(-2.5, -1.5)} B. {(2.5, 2.5)} C. {(2.5, 1.5)} D. {(3.5, 2.5)}
Mathematics