Find the absolute value.
A. ±21
B. -21
C. 0
D. 21
Answer: D
Mathematics
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Find the center and radius of the sphere.3x2 + 3y2 + 3z2 - 2x + 2y = 9
A. C
, a = 
B. C
, a = 
C. C
, a = 
D. C
, a = 
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Graph the linear inequality.y ? 3x - 4
A. 
B. 
C. 
D. 
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The volume of a spherical cancerous tumor is given by the function 
where r is the radius of the tumor in centimeters. By what factor is the volume of the tumor increased if its radius is quadruple?
Fill in the blank(s) with the appropriate word(s).
Mathematics
List the intercepts of the graph. 
A. (-6, 0) B. (6, 0) C. (0, 6) D. (0, -6)
Mathematics