Add or subtract.
- 
A. 
B. 
C. 
D. 
Answer: B
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Find the volume of the solid generated by revolving the region about the y-axis.The region in the first quadrant bounded on the left by the circle x2 + y2 = 16, on the right by the line 
, and above by the line y = 4
A. 64?
B. 16?
C. 
?
D. 
?
Find the area. Use 3.14 for ? as necessary.
A. 81 in.2 B. 27 in.2 C. 324 in.2 D. 162 in.2
Solve the problem.Yearly sales at a certain department store follow the model 
where y is the total sales in thousands of dollars and x is the number of years after the store opened. How many years after the store's opening will the total sales for the year first be less than 
?
A. 929 yr B. 10 yr C. 6 yr D. 8 yr
Solve the problem. Round to two decimal places if needed.A sector of a circle has an area of 56 square meters. Find the radius of the circle if the central angle that forms the sector is 30°.
A. 3.83 meters B. 14.65 meters C. 58.61 meters D. 14.63 meters