Solve.Bruce and Elaine hired a magician for their daughter's birthday party. The magician charged $49 plus $7 for each child attending the party. The total bill came to $189. How many children attended the party?
A. 20 children
B. 7 children
C. 140 children
D. 27 children
Answer: A
Mathematics
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Use Stokes' Theorem to calculate the circulation of the field F around the curve C in the indicated direction.F = -3yi - 5xj - 2z3k ; C: the portion of the plane 8x + 8y + 3z = 8 in the first quadrant
A. -2 B. - 1 C. 1 D. 0
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Find the volume of the indicated region.The region under the surface 
, and bounded by the planes 
and 
and the cylinder 
A. 
B. 
C. 
D. 
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Use the shell method to find the volume of the solid generated by revolving the shaded region about the indicated axis.About the x-axisy = 3x = 3
A. 
?
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D. 18?
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