document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=5842>Question 5842</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Word Problem: \r<BR>\n" );
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document.write( "An initial deposite of $4000 is made in a savings account for which the interest is compounded continuously.  The balance will triple in 15 years. What is the annual rate of interest for this account? \r<BR>\n" );
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document.write( "I took the A=Pe to the rt formula.<BR>\n" );
document.write( "12000=4000e to the 15r<BR>\n" );
document.write( "divided 4000 to each side\r<BR>\n" );
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document.write( "3=e to the 15 r<BR>\n" );
document.write( "then I found the natural log of both sides<BR>\n" );
document.write( "ln3=ln15 to the r<BR>\n" );
document.write( "I divided by ln15<BR>\n" );
document.write( "ln3/1n15=r \r<BR>\n" );
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document.write( "Is this right? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #3052 by </B><A HREF=/tutors/aboutme.mpl?userid=Abbey><B>Abbey(339)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Abbey><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=3052\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You made a mistake when you took the ln of both sides:\r<BR>\n" );
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document.write( "It should have read:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln3=lne%5E%2815r%29 ALIGN=MIDDLE  ALT=\"ln3=lne%5E%2815r%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln3=15r%2Alne ALIGN=MIDDLE  ALT=\"ln3=15r%2Alne\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and because the lne = 1:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln3=15r%2A%281%29 ALIGN=MIDDLE  ALT=\"ln3=15r%2A%281%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln3%2F15=r ALIGN=MIDDLE  ALT=\"ln3%2F15=r\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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