document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1131577>Question 1131577</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The number of bacteria in a certain population increases according to a continuous exponential growth model with a growth rate of 8.6% per hour. How many hours does it take for the size of the sample to double? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #748252 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=748252\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The number of bacteria in a certain population increases according to a continuous exponential growth model with a growth rate of 8.6% per hour. How many hours does it take for the size of the sample to double? <BR>\n" );
document.write( "----<BR>\n" );
document.write( "N = N*r^t<BR>\n" );
document.write( "2A = A*1.086^t<BR>\n" );
document.write( "----<BR>\n" );
document.write( "1.086^t = 2<BR>\n" );
document.write( "t = log(2)/log(1.086)<BR>\n" );
document.write( "t = 8.4 hours<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "----------<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );