Write out the sum. Do not evaluate.
A. 6 + 7 + 8 + 9
B. 2 + 3 + 4 + 5
C. 3 + 4 + 5 + 6
D. 3 + 4 + 5 + 6 + ...
Answer: C
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Match the system of inequalities with one of the graphs.x2 + y2 ? 49x + y > 4
A. 
B. 
C. 
D. 
Find the surface area or volume.Use an integral table and a calculator to find to two decimal places the area of the surface generated by revolving the curve 
about the x-axis.
A. 40.67 B. 57.04 C. 69.72 D. 81.33
Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = ln (x2 + y2)i + tan-1 
j; C is the region defined by the polar coordinate inequalities 2 ? r ? 3 and 
A. 13 B. -2 C. 0 D. 10
Find the center of mass of a thin plate of constant density covering the given region.The region bounded by the x-axis and the semicircle y = 
A. 
= 
, 
= 0
B. 
= 
, 
= 
C. 
= 0, 
= 
D. 
= 0, 
= 