One section of a suspension bridge hangs between two towers that are 40 feet above the surface and 300 feet apart.
A cable strung between the tops of the two towers is in the shape of a parabola with its vertex 20 feet above the surface. With axes drawn as indicated in the figure, find the equation of the parabola.
A. x2 - 563y + 45,000 = 0
B. x2 - 1,125y + 22,500 = 0
C. x2 - 695y + 55,600 = 0
D. x2 - 1,390y + 27,800 = 0
E. x2 - 1,100y + 22,000 = 0
Answer: B
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