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#36140

applications

polynomials

functions

hard

100 sec

The cross-section of a parabolic arch is modeled by the equation $y = - 0.05 x^{2} + 2 x$ , where $y$ represents the height of the arch in meters and $x$ represents the horizontal distance in meters from the left base of the arch. What is the width of the arch at its base, in meters?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.