document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=953527>Question 953527</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help!<BR>\n" );
document.write( "A room contains 78 chairs arranged in rows. The number of rows is one more than twice the number of chairs per row. Find the number of rows. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #582337 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=582337\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A room contains 78 chairs arranged in rows. The number of rows is one more than twice the number of chairs per row. Find the number of rows.<BR>\n" );
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document.write( "Let the number of rows be \"r\".<BR>\n" );
document.write( "Let the number of chairs in a row be \"c\"<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "c*r = 78<BR>\n" );
document.write( "r = 2c+1<BR>\n" );
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document.write( "Substitute for \"r\" and solve for \"c\":<BR>\n" );
document.write( "c(2c+1) = 78<BR>\n" );
document.write( "2c^2 + c - 78 = 0<BR>\n" );
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document.write( "Factor:<BR>\n" );
document.write( "(c-6)(2c+13) = 0<BR>\n" );
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document.write( "Positive solution:<BR>\n" );
document.write( "# of chairs in a row = 6<BR>\n" );
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document.write( "Solve for \"r\":<BR>\n" );
document.write( "r = 2c+1<BR>\n" );
document.write( "# of rows = 2*6+1 = 13<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "------------<BR>\n" );
document.write( " </SPAN>\n" );
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