document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=896427>Question 896427</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A culture of cells is growing exponentially. The number of cells at 8 A.M. is 25 and the doubling time is 15 minutes.\r<BR>\n" );
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document.write( "(b) When will there be 750 cells present? (Give your answer correct to two decimal places.)<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #543505 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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/cgi-bin/show-face.mpl?user=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=543505\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> S=t*(1 - r^n)/(1 - r)<BR>\n" );
document.write( "750=25*(1 - 2^n)/(1 - 2)\r<BR>\n" );
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document.write( "n is almost 5\r<BR>\n" );
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document.write( "n = 4.95<BR>\n" );
document.write( "0      0     25<BR>\n" );
document.write( "1     15     50<BR>\n" );
document.write( "2     30     100<BR>\n" );
document.write( "3     45     200<BR>\n" );
document.write( "4     60     400<BR>\n" );
document.write( "4.95  74.25  750 <BR>\n" );
document.write( "5     75     800\r<BR>\n" );
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