document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=683894>Question 683894</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A rectangular garden is to be surrounded by a walkway of constant width. The garden's dimensions are 30 ft by 40 ft. The total area, garden plus walkway, is to be 1800 ft2. What must be the width of the walkway to the nearest thousandth?<BR>\n" );
document.write( "a. 7.720 ft<BR>\n" );
document.write( "b. 5.430 ft<BR>\n" );
document.write( "c. 3.860 ft<BR>\n" );
document.write( "d. 2.610 ft </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #423845 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=423845\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "Let the width of the walkway be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=xft ALIGN=MIDDLE  ALT=\"xft\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Then, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2830+%2B+2x%29%2840+%2B+2x%29+=+1800 ALIGN=MIDDLE  ALT=\"%2830+%2B+2x%29%2840+%2B+2x%29+=+1800\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2815+%2B+x%29%2A2%2820+%2B+x%29+=+1800 ALIGN=MIDDLE  ALT=\"2%2815+%2B+x%29%2A2%2820+%2B+x%29+=+1800\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2815+%2B+x%29%2820+%2B+x%29+=+1800 ALIGN=MIDDLE  ALT=\"4%2815+%2B+x%29%2820+%2B+x%29+=+1800\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%284%29%2815+%2B+x%29%2820+%2B+x%29+=+cross%281800%29450 ALIGN=MIDDLE  ALT=\"cross%284%29%2815+%2B+x%29%2820+%2B+x%29+=+cross%281800%29450\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2815+%2B+x%29%2820+%2B+x%29+=+450 ALIGN=MIDDLE  ALT=\"%2815+%2B+x%29%2820+%2B+x%29+=+450\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+%2B+35x+%2B+300+=+450 ALIGN=MIDDLE  ALT=\"x%5E2+%2B+35x+%2B+300+=+450\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+%2B+35x+%2B+300-450=0 ALIGN=MIDDLE  ALT=\"x%5E2+%2B+35x+%2B+300-450=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+%2B+35x+-+150+=+0 ALIGN=MIDDLE  ALT=\"x%5E2+%2B+35x+-+150+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >......use quadratic formula\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-35+%2B-+sqrt%28+35%5E2-4%2A1%2A%28-150%29+%29%29%2F%282%2A1%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-35+%2B-+sqrt%28+35%5E2-4%2A1%2A%28-150%29+%29%29%2F%282%2A1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-35+%2B-+sqrt%28+1225%2B600+%29%29%2F2+ ALIGN=MIDDLE  ALT=\"x+=+%28-35+%2B-+sqrt%28+1225%2B600+%29%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-35+%2B-+sqrt%28+1825+%29%29%2F2+ ALIGN=MIDDLE  ALT=\"x+=+%28-35+%2B-+sqrt%28+1825+%29%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-35+%2B-+42.72%29%2F2+ ALIGN=MIDDLE  ALT=\"x+=+%28-35+%2B-+42.72%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >....find only positive root since width could be only positive number\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-35+%2B+42.72%29%2F2+ ALIGN=MIDDLE  ALT=\"x+=+%28-35+%2B+42.72%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+7.72%2F2+ ALIGN=MIDDLE  ALT=\"x+=+7.72%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x+=+3.86ft%29+ ALIGN=MIDDLE  ALT=\"highlight%28x+=+3.86ft%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "so, your answer is c. <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3.860+ft ALIGN=MIDDLE  ALT=\"3.860+ft\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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