List the intercepts of the graph.Tell whether the graph is symmetric with respect to the x-axis, y-axis, origin, or none of these. 
A. intercept: (0, 4)
no symmetry
B. intercept: (4, 0)
symmetric with respect to y-axis
C. intercept: (4, 0)
no symmetry
D. intercept: (0, 4)
symmetric with respect to x-axis
Answer: A
Mathematics
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Sketch the surface z = f(x,y).f(x, y) = 2 -x2 - y2
A. 
B. 
C. 
D. 
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Solve. Round to the nearest hundredth, if necessary.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 80 seconds are required to make a 5-by-4 enlargement, find the time required for a 7-by-9 enlargement.
A. 315 sec B. 378 sec C. 189 sec D. 252 sec
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Write an equivalent double integral with the order of integration reversed.
A. 
B. 
C. 
D. 
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Simplify
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