document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=241258>Question 241258</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how long will it take for the population of a certain country to double if its annual growth rate is 3.3%? round to the nearest year.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "i got 21 and 9 years<BR>\n" );
document.write( "my freind got 61 and 1\r<BR>\n" );
document.write( "\n" );
document.write( "which is correct? :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #176679 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=176679\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> how long will it take for the population of a certain country to double if its annual growth rate is 3.3%? round to the nearest year.<BR>\n" );
document.write( "---------------------------------<BR>\n" );
document.write( "2P = Pe^(rt)<BR>\n" );
document.write( "e^(0.033t) = 2<BR>\n" );
document.write( "Take the natural log:<BR>\n" );
document.write( "0.033t = 0.693147...<BR>\n" );
document.write( "t = 21.0 years </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );