Round to the nearest dollar.$257.47
A. $258
B. $257.47
C. $257.50
D. $257
Answer: D
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Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by the triangle with vertices (4, 0), (4, 2), (6, 2)
A. 
?
B. 
?
C. 
?
D. 
?
Evaluate the integral.
A. 392
B. 784
C. 
D. 
Show that the set is infinite by placing it in a one-to-one correspondence with a proper subset of itself. Be sure to show the pairing of the general terms in the sets.{4, 6, 8, 10, ...}
A.
| { | 4, | 6, | 8, | 10, ..., | 2n + 6, | ...} |
| ? | ? | ? | ? | ? |
| { | 6, | 8, | 10, | 12, ..., | 2n + 4, | ...} |
B.
| { | 4, | 6, | 8, | 10, ..., | 2n + 3, | ...} |
| ? | ? | ? | ? | ? |
| { | 6, | 8, | 10, | 12, ..., | 2n + 5, | ...} |
C.
| { | 4, | 6, | 8, | 10, ..., | 2n + 2, | ...} |
| ? | ? | ? | ? | ? |
| { | 6, | 8, | 10, | 12, ..., | 2n + 4, | ...} |
D.
| { | 4, | 6, | 8, | 10, ..., | 2n + 2, | ...} |
| ? | ? | ? | ? | ? |
| { | 5, | 7, | 9, | 11, ..., | 2n + 4, | ...} |
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the x-y plane; range: all real numbers; level curves: parabolas 
B. Domain: all points in the x-y plane excluding x = 0; range: all real numbers; level curves: parabolas 
C. Domain: all points in the x-y plane excluding x = 0; range: real numbers z ? 0; level curves: parabolas 
D. Domain: all points in the x-y plane; range: real numbers z ? 0; level curves: parabolas 