document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=37085>Question 37085</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi!  I've been working on this problem for hours...I've been trying to solve this word problem using the f(t) = 10^t equation :\r<BR>\n" );
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document.write( "A computer is infected with the Sasser virus.  Assume that it infects 20 other computers within 5 minutes; and that these PCs and servers each infect 20 more machines within another five minutes, etc.  How long until 100 million computers are infected?\r<BR>\n" );
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document.write( "I know that I'm SO close to getting it but it just hasn't clicked yet.  Please help me. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #22792 by </B><A HREF=/tutors/aboutme.mpl?userid=jcmtnez><B>jcmtnez(53)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jcmtnez><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=22792\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The solution that I have obtained is not exact. \r<BR>\n" );
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document.write( "Let f(a)=2^(2a)+5^a This equation will give you the number of infected computers, I will explain you how it works above.\r<BR>\n" );
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document.write( "The time will be equal to five times a\r<BR>\n" );
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document.write( "for example \r<BR>\n" );
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document.write( "f(1)=20  computers infected in 1(5)=5 minutes<BR>\n" );
document.write( "f(2)=400 computers infected in 2(5)=10 minutes<BR>\n" );
document.write( "etc\r<BR>\n" );
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document.write( "the solution for 100 million computers is not exact you must use logartithms\r<BR>\n" );
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document.write( "Solution:\r<BR>\n" );
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document.write( "a= 8/(2log(2)+log(5))   log in decimal base\r<BR>\n" );
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document.write( "t= 5a the time is 5 times a<BR>\n" );
document.write( "the time is aproximately 30.74487147 minutes\r<BR>\n" );
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document.write( "If you have any comment about the solution write me.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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