document.write( "Question 758199: The length of a rectangular sign is 5 feet longer than the width. If the sign’s area is 300 square feet, find it’s length and width. \n" ); document.write( "
Algebra.Com's Answer #461299 by lwsshak3(11628)\"\" \"About 
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The length of a rectangular sign is 5 feet longer than the width. If the sign’s area is 300 square feet, find it’s length and width.
\n" ); document.write( "***
\n" ); document.write( "let x=width
\n" ); document.write( "x+5=length
\n" ); document.write( "area=length times width
\n" ); document.write( "(x+5)x=300
\n" ); document.write( "x^2+5x-300=0
\n" ); document.write( "(x+20)(x-15)=0
\n" ); document.write( "x+20=0
\n" ); document.write( "x=-20 (reject, x>0)
\n" ); document.write( "x=15
\n" ); document.write( "x+5=20
\n" ); document.write( "..
\n" ); document.write( "width=15 ft
\n" ); document.write( "length=20ft \n" ); document.write( "
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