document.write( "Question 197841: Quadratic Equations
\n" ); document.write( "7. A basketball is tossed from the top of a 3-m wall. The path of the basketball is defined by the relation y=-x^2+2x+3, where x represents the horizontal distance travelled, in metres, and y represents the height, in metres, above the ground. How far has the basketball travelled horizontally when it lands on the ground?\r
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Algebra.Com's Answer #148345 by stanbon(75887)\"\" \"About 
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A basketball is tossed from the top of a 3-m wall. The path of the basketball is defined by the relation y=-x^2+2x+3, where x represents the horizontal distance traveled, in metres, and y represents the height, in metres, above the ground. How far has the basketball traveled horizontally when it lands on the ground?
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\n" ); document.write( "The height of the ball is zero when it hits the ground.
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\n" ); document.write( "Solve -x^2 + 2x + 3 = 0
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\n" ); document.write( "(-x + 3)(x+1) = 0
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\n" ); document.write( "Positive solution:
\n" ); document.write( "x = 3 meters (horizontal travel distance)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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