Mentally estimate the sum by rounding each number to the first digit. 
A. 2400
B. 2424
C. 2420
D. 2500
Answer: D
Mathematics
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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 curve y = 5sin x, 0 ? x ? ?
A. 
= ?, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Mathematics
Solve the problem.Midtown Antiques collects 4% sales tax on all sales. If total sales including tax are $1923.67, find the portion that is the tax. Round your answer to the nearest cent.
A. $73.99 B. $63.99 C. $1849.68 D. $76.95
Mathematics
Find the greatest common factor of the terms.88x2, 44x9
A. 44x2 B. 88x2 C. 22x7 D. 66x2
Mathematics
Graph the function.g(x) = 
A. 
B. 
C. 
D. 
Mathematics