document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=151922>Question 151922</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The problem is to use the equation p=7t^2+2500: 2500 is current population, to find how many years it would take for the population to reach 12,000.round to the nearest whole year when necessary. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #111667 by </B><A HREF=/tutors/aboutme.mpl?userid=nabla><B>nabla(475)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nabla><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=111667\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Then we want:<BR>\n" );
document.write( "12000=7t^2+2500<BR>\n" );
document.write( "0=7t^2-9500\r<BR>\n" );
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document.write( "and\r<BR>\n" );
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document.write( "9500/7=t^2\r<BR>\n" );
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document.write( "so\r<BR>\n" );
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document.write( "Sqrt(9500/7)=t  (we exclude the negative solution)\r<BR>\n" );
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document.write( "t is approximately 37 years. </SPAN>\n" );
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