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

question 438

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

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