document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=107033>Question 107033</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, please help me answer this question:\r<BR>\n" );
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document.write( "The president of a company producing water pumps has gathered data suggesting that the average cost in dollars producing x units per hour of a new style of pump will be C(x)=x^2-22x+166.  Determine the number of pumps per hour to produce to keep the average cost below $75 per pump.\r<BR>\n" );
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document.write( "Thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #77897 by </B><A HREF=/tutors/aboutme.mpl?userid=Annabelle1><B>Annabelle1(69)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Annabelle1><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=77897\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> you need to solve C(x)=x^2-22x+166<75<BR>\n" );
document.write( "s0 x^2-22x+166-75<0\r<BR>\n" );
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document.write( "x^2-22x+91<0\r<BR>\n" );
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document.write( "this isn't factorisable so put it into the quadratic formula<BR>\n" );
document.write( "a=1 b=-22 c=91<BR>\n" );
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;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%2822+%2B-+sqrt%28+22%5E2-4%2A1%2A91+%29%29%2F%282%2A1%29+ ALIGN=MIDDLE  ALT=\"x+=+%2822+%2B-+sqrt%28+22%5E2-4%2A1%2A91+%29%29%2F%282%2A1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "x=(22+-sqrt(120)/2\r<BR>\n" );
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document.write( "x=16.477<BR>\n" );
document.write( "or<BR>\n" );
document.write( "x=5.523\r<BR>\n" );
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document.write( " </SPAN>\n" );
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