Factor out the greatest common factor.5x2 - 30x
A. 5x(x - 6x)
B. x(5x - 30)
C. 5x(x - 6)
D. 5(x2 - 6x)
Answer: C
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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = -2 and x = 2. The cross sections perpendicular to the x-axis are circles whose diameters stretch from the curve 
to the curve 
A. 
?2
B. 
?2
C. 81?
D. 81?2
Graph the equation.3y = 21
A. 
B. 
C. 
D. 
Simplify the expression.2p2 + 5p3 - 8p2 - 9p3
A. -10p2 B. -6p2 - 4p3 C. -10p2p3 D. 7p2 - 17p3
Find the center and radius of the circle whose graph is shown. Write the standard form of the equation of the circle.
A. r = 4; (h, k) = (-4, 1); (x - 4)2 + (y + 1)2 = 16 B. r = 2; (h, k) = (-4, 1); (x - 4)2 + (y + 1)2 = 4 C. r = 2; (h, k) = (-4, 1); (x + 4)2 + (y - 1)2 = 4 D. r = 4; (h, k) = (-4, 1); (x + 4)2 + (y - 1)2 = 16