As a Speeding Train Crosses a Trestle Over a Deep $x ^ { 2 } = - 7.0 ( y - 185 )$

Multiple Choice

As a speeding train crosses a trestle over a deep gorge,a child drops his toy plane from the window.The path of the toy plane is modeled by $x ^ { 2 } = - 7.0 ( y - 185 )$ ,where y is the height above the floor of the gorge and distances are measured in feet.How far will the toy plane travel horizontally before it hits the bottom of the gorge? [Note: The toy plane does not glide;it "drops like a rock."]

A) 7.0 ft
B) 36.0 ft
C) 185 ft
D) 1295.0 ft
E) 14 ft