Answer the problems related to parabola, make a graph.

1. The receiving dish of a cable TV is in the shape of a paraboloid of revolution. Find the location of the receiver which is placed at the focus if the dish is 12 feet across and 3 feet deep. 2. The suspension bridge cables are in the shape of a parabola. The distance between two towers supporting the cable are 800 feet apart and the height is 200 feet. If the vertical support cables are at 100 feet intervals along the level roadway, what are the lengths of these vertical cables