



 
Hi Jennifer, I drew a rough diagram (not so scale), put some dimensions on it and a coordinate system in red. The origin is at the road surface directly below the lowest point on the cable so the equation of the parabola is $y = a x^2 + b.$ When $x = 0$ what is the value of $y?$ What is the value of $b?$ What are the coordinates of the point P? Substitute into the equation. What is the value of $a?$ Now that you know the equation of the parabola you should be able to complete the problem. Penny  


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