document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=978086>Question 978086</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The count in a bacteria culture was 700 after 20 minutes and 1000 after 35 minutes.\r<BR>\n" );
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document.write( "What was the initial size of the culture?      \r<BR>\n" );
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document.write( "Find the doubling period.      \r<BR>\n" );
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document.write( "Find the population after 100 minutes.      \r<BR>\n" );
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document.write( "When will the population reach 13000. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #599585 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=599585\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> More skills with logarithms, AND with linear equations.\r<BR>\n" );
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document.write( "x, time in minutes<BR>\n" );
document.write( "N, initial population<BR>\n" );
document.write( "y, resulting population<BR>\n" );
document.write( "k, a constant<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=N%2Ae%5E%28kt%29 ALIGN=MIDDLE  ALT=\"y=N%2Ae%5E%28kt%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28y%29=ln%28N%29%2Bkx ALIGN=MIDDLE  ALT=\"ln%28y%29=ln%28N%29%2Bkx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28ln%28y%29=kx%2Bln%28N%29%29 ALIGN=MIDDLE  ALT=\"highlight_green%28ln%28y%29=kx%2Bln%28N%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >------THIS is now a linear equation with slope k, and vertical axis intercept <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28N%29 ALIGN=MIDDLE  ALT=\"ln%28N%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  You need to use your vertical axis coordinates as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28y%29 ALIGN=MIDDLE  ALT=\"ln%28y%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  Your two data points are (x, ln(y)). </SPAN>\n" );
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