document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=257229>Question 257229</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This has been asked before and Stan was the one who responded.  I can see where he was going, but I don't like to just take an answer, I like to figure it out, too and see where I go.  I am not getting the same answer, so I was wondering if someone can tell me where I am going wrong.  Here is what I have been doing:\r<BR>\n" );
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document.write( "PROBLEM:<BR>\n" );
document.write( "Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour, and your city is the first stop on the tour. You need to supply information about projected ticket sales to the box office manager. The box office manager uses this information to anticipate staffing needs until the tickets sell out. You provide the manager with a quadratic equation that models the expected number of ticket sales for each day x. (  is the day tickets go on sale).   <BR>\n" );
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document.write( "And when it comes to figuring out the last day of sales, I do this:\r<BR>\n" );
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document.write( "- .2x^2+12x+11<BR>\n" );
document.write( "a= -.2  b= 12  c= 11\r<BR>\n" );
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document.write( "x= -(-.2)+- sqrt(12^2-4*(-.2)*11/2*(-.2)\r<BR>\n" );
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document.write( "x= .2 +- sqrt(144-(-.8)*11/-.4\r<BR>\n" );
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document.write( "x= .2 +- sqrt(144-(-8.8)/-.4\r<BR>\n" );
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document.write( "x= .2 +- sqrt(152.8)/-.4\r<BR>\n" );
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document.write( "And this is where I get lost.....I am getting decimals out the rear and can't figure out what I am doing wrong.  Does this even look close???  I would really, really appreciate any help....  I'm about to give up...  It's been 2 days working on this stupid problem.  Ugh!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #189166 by </B><A HREF=/tutors/aboutme.mpl?userid=drk><B>drk(1908)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=drk><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=189166\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> So it appears you were given this or somehow you cam up with this<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-+.2x%5E2%2B12x%2B11 ALIGN=MIDDLE  ALT=\"-+.2x%5E2%2B12x%2B11\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Either way I assume this is correct.<BR>\n" );
document.write( "We apply the quadratic as<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-12+%2B-+sqrt%28+144-4%2A%28-.2%29%2A%2811%29+%29%29%2F%28-.4%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-12+%2B-+sqrt%28+144-4%2A%28-.2%29%2A%2811%29+%29%29%2F%28-.4%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and then<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-12+%2B-+sqrt%28+152.8+%29%29%2F%28-.4%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-12+%2B-+sqrt%28+152.8+%29%29%2F%28-.4%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "which is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+60.90307 ALIGN=MIDDLE  ALT=\"x+=+60.90307\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "or<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+-.90307 ALIGN=MIDDLE  ALT=\"x+=+-.90307\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The average of these 2 is 30.<BR>\n" );
document.write( " The vertex formula is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-.2%28x-30%29%5E2+%2B+198 ALIGN=MIDDLE  ALT=\"y+=+-.2%28x-30%29%5E2+%2B+198\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "at 30 days, you sell 198 tickets. </SPAN>\n" );
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