document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1022841>Question 1022841</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You can model an arch at your school using the equation y=0.7(x-3.5)(x+3.5), where x and y are both measured in feet. The x axis represents the ground. Find the width of the arch at ground level.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #638428 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39630)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=638428\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Not sure how you mean, \"width at ground level\".  Your arch is represented as a parabola, with a vertex MINIMUM.  Your arch opens upward.  How are you expecting your width?\r<BR>\n" );
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document.write( "Your arch as described goes below the ground.<BR>\n" );
document.write( "The graph of your parabola as defined is this:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C300%2C-5%2C5%2C-9%2C1%2C0.7%28x-3.5%29%28x%2B3.5%29%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C300%2C-5%2C5%2C-9%2C1%2C0.7%28x-3.5%29%28x%2B3.5%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Maybe \"width\" is the wrong word, and you meant \"length\" instead.  This may be the distance between the two x-axis intercepts, being 7 feet. </SPAN>\n" );
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