document.write( "Question 220547: If the perimeter of the window is 12 ft, what is the area A of the window as a function of the width x of the window? \n" ); document.write( "
Algebra.Com's Answer #165543 by scott8148(6628)\"\" \"About 
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length plus width is half the perimeter\r
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\n" ); document.write( "\n" ); document.write( "L + x = 6 ___ L = 6 - x\r
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\n" ); document.write( "\n" ); document.write( "area is length times width\r
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\n" ); document.write( "\n" ); document.write( "A = (6 - x) * x = 6x - x^2
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