document.write( "Question 1038138: The drama club is building a backdrop using arches whose shape can be represented by the function f(x) = -x^2 + 2x + 8, where x is the length in feet. The area under each arch is to be covered with fabric.
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\n" ); document.write( "\n" ); document.write( "What is the length of the segment along the floor of each arch?
\n" ); document.write( "3 feet
\n" ); document.write( "4 feet
\n" ); document.write( "6 feet
\n" ); document.write( "8 feet
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Algebra.Com's Answer #652859 by Alan3354(69443)\"\" \"About 
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The drama club is building a backdrop using arches whose shape can be represented by the function f(x) = -x^2 + 2x + 8, where x is the length in feet. The area under each arch is to be covered with fabric.
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\n" ); document.write( "Find the 2 points where f(x) = 0, the zeroes of the function.
\n" ); document.write( "f(x) = -x^2 + 2x + 8 = 0
\n" ); document.write( "(-x + 4)*(x + 2) = 0
\n" ); document.write( "--> x = -2 & x = 4
\n" ); document.write( "--> 6 feet
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