document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=378932>Question 378932</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In an office building, a room contains 48 chairs. The number of chairs per row is 10 less than twice the number of rows. find the number of rows. \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 #269121 by </B><A HREF=/tutors/aboutme.mpl?userid=vleith><B>vleith(2983)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=vleith><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=269121\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x be the number of chairs/row and r be the number of rows.<BR>\n" );
document.write( "You are told<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2Ar+=+48 ALIGN=MIDDLE  ALT=\"x%2Ar+=+48\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+2r+-+10 ALIGN=MIDDLE  ALT=\"x+=+2r+-+10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2Ar+=+48 ALIGN=MIDDLE  ALT=\"x%2Ar+=+48\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282r+-+10%29+%2A+r+=+48 ALIGN=MIDDLE  ALT=\"%282r+-+10%29+%2A+r+=+48\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2r%5E2+-+10r+=+48 ALIGN=MIDDLE  ALT=\"2r%5E2+-+10r+=+48\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2r%5E2+-10r+-+48+=+0 ALIGN=MIDDLE  ALT=\"2r%5E2+-10r+-+48+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%5E2+-+5r+-+24+=+0 ALIGN=MIDDLE  ALT=\"r%5E2+-+5r+-+24+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28r+-+8%29%28r+%2B+3%29+=+0 ALIGN=MIDDLE  ALT=\"%28r+-+8%29%28r+%2B+3%29+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So r can be either 8 or -3. Since the number of rows can't be negative,<BR>\n" );
document.write( "there must be 8 rows.<BR>\n" );
document.write( "If there are 8 rows, then <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2A8+=+48 ALIGN=MIDDLE  ALT=\"x%2A8+=+48\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "thus <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+6 ALIGN=MIDDLE  ALT=\"x+=+6\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "8 rows of 6 chairs each<BR>\n" );
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