Find the volume of the solid generated by revolving the region about the given axis. Use the shell or washer method.The region bounded by x = 3
, x = - 3y, and y = 1 about the line y = 1
A. 
?
B. 
?
C. 3?
D. 
?
Answer: A
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Solve by graphing. Label the axes and show where the solution is located on the graph.Suppose the sales of a particular brand of appliance satisfy the relationship 
where y represents the number of sales in year x, with 
corresponding to 1982. Find the number of sales 
.
A. 7380 B. 3720 C. 7440 D. 3660
Solve the system by the elimination method. x - 4y = 8-6x - 3y = 6
A. {(1, -3)} B. {(2, 0)} C. {(0, -2)} D. ?
Perform the indicated operations using the laws of exponents. Express the result using positive exponents.
A. 
B. 
C. 
D. 
E. 
Solve the problem.How close does the curve y = 
come to the point 
? (Hint: If you minimize the square of the distance, you can avoid square roots.)
A. The distance is minimized when x = - 
; the minimum distance is 
units.
B. The distance is minimized when x = 2; the minimum distance is 
units.
C. The distance is minimized when x = 
; the minimum distance is 
units.
D. The distance is minimized when x = 
; the minimum distance is 
units.