document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1160928>Question 1160928</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the time required for an investment to triple in value if invested in an account paying 4% compounded monthly.<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 #784342 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=784342\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Annual interest rate: 4%<BR>\n" );
document.write( "Monthly interest rate: (4/12)%<BR>\n" );
document.write( "Monthly growth factor: 1+(4/12)% = 1+1/300 = 301/300<br><BR>\n" );
document.write( "If n is the number of months, then you need to find the exponent n for which<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28301%2F300%29%5En+=+3 ALIGN=MIDDLE  ALT=\"%28301%2F300%29%5En+=+3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Use logarithms, or a graphing utility like a graphing calculator....<br><BR>\n" );
document.write( "(My calculations show a bit over 330 months)<br><BR>\n" );
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