document.write( "Question 257281: The width of a rectangular poster is one-half of its length. The area of the poster is 128 sq. ft. Click on the equation that will determine the length.
\n" ); document.write( "Let L = length.
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Algebra.Com's Answer #189209 by rfer(16322)\"\" \"About 
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x*2x=128
\n" ); document.write( "2x^2=128
\n" ); document.write( "x^2=64
\n" ); document.write( "x=8 ft
\n" ); document.write( "2x=16 ft
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