Question

An arch can be modeled by y=-9/50(x-2)(x-16). Where x and y are measured in meters. The x-axis represents the ground. Find the width in meters

Answer 1

+x+=+3+

+y+=+-.9%2A%28+3+%2B+3+%29%2A%28+3+-+3+%29+

+y+=+-.9%2A6%2A0+

+y+=+0+

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The distance between ( -3, 0 ) and ( 3, 0 )

is +3+-%28-3%29+=+6+

The width of the arch at ground level is 6 ft

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Here's the plot of the equation:

Explanation: