A hole in the side of a large metal tank needs to be repaired. A piece of rectangular sheet metal of area 
will patch the hole. If the length of the sheet metal must be 
ft longer than its width what will the dimensions of the
sheet metal be?
A. The width is 44 ft,
The length is 3.25 ft.
B. The width is 11 ft,
The length is 13 ft.
C. The width is 13 ft,
The length is 11 ft.
D. The width is 11 ft,
The length is 11 ft.
E. The width is 13 ft,
The length is 13 ft.
Answer: B
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Find all the second order partial derivatives of the given function.f(x, y) = cos (xy2)
A. 
= y2 sin xy2; 
= 2[2y2 cos (xy2) - sin (xy2)] ; 
= 
= 2y[y2 cos (xy2) - sin (xy2)]
B. 
= -y4 cos xy2; 
= - 2x[2xy2 cos (xy2) + sin(xy2)]; 
= 
=
- 2y[xy2 cos (xy2) + sin(xy2)];
C. 
= - y2 sin xy2; 
= 2y
; 
= 
= 2
D. 
= - y2 sin xy2; 
= 2[ sin (xy2)- 2y2 cos (xy2)] ; 
= 
= 2y [sin (xy2)-y2 cos (xy2)]
Answer the questionWhat type of variation is suggested by the graph?
A. y varies inversely as the square of x B. x varies directly as the square of y C. y varies directly as the square of x D. x varies inversely as the square of y
Solve the problem.An auditorium has 25 rows with 10 seats in the first row, 12 in the second row, 14 in the third row, and so forth. How many seats are in the auditorium?
A. 900 seats B. 850 seats C. 550 seats D. 500 seats
Graph the solution set of the system of inequalities or indicate that the system has no solution.y ? 12 ? x ? 6x - 2y ? -2x + y ? 6
A. 
B. 
C. 
D. 