Solve the problem.The perimeter of a rectangle is 50 m. If the width were doubled and the length were increased by 19 m, the perimeter would be 108 m. What are the length and width of the rectangle?
A. Length: 12 m; width: 7 m
B. Length: 15 m; width: 10 m
C. Length: 12 m; width: 12 m
D. Length: 10 m; width: 15 m
Answer: B
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Suppose 
. If the limiting value of z is 0, what is the limiting value of w?
?
A. 7 B. 0 C. 9 D. None of the above
Find the area of the surface generated when the given curve is revolved about the y-axis.y = 
, for 8 ? x ? 10
A. 4?(263/2 - 173/2)
B. 
(113/2 - 103/2)
C. 
(263/2 - 173/2)
D. 
(263/2 - 173/2)
Solve the problem.Find the mass of the region of density 
bounded by the paraboloid 
and the xy-plane.
A. 36? B. 216? C. 1296? D. 6?
Find the discount date and net payment date. (The net payment date is 20 days after the final discount date.)Invoice date: Aug 8Terms: 2/15 ROGGoods received: Oct 10
A. Discount date: Oct 15; net payment date: Nov 15 B. Discount date: Oct 25; net payment date: Nov 14 C. Discount date: Oct 25; net payment date: Nov 15 D. Discount date: Sept 15; net payment date: Oct 15