Find the vertex, focus, and directrix of the parabola with the given equation.y2 - 6y - 8x + 57 = 0
A. vertex: (6, 3)
focus: (8, 3)
directrix: x = 4
B. vertex: (3, 6)
focus: (3, 8)
directrix: y = 4
C. vertex: (6, 3)
focus: (4, 3)
directrix: x = 8
D. vertex: (3, 6)
focus: (3, 4)
directrix: y = 8
Answer: A
Mathematics
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C. 
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Five pieces of sheet metal have been cut to form a container. The five pieces are of sizes 
, 
, 
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and 
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Mathematics