document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=106033>Question 106033</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0471793035/algebrahomeworkh>functions modeling change</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> How long does it take an investment to double if it grows according to the formula V=537e^.015t? Assume t is in years? (^ is used to show that e has been raised to the .015t power). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #77147 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=77147\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> At time t=0, the investment is worth V=$537<BR>\n" );
document.write( "When will it be worth 2($537)=$1074?<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V%28t%29=1074 ALIGN=MIDDLE  ALT=\"V%28t%29=1074\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=537e%5E%28.015t%29=1074 ALIGN=MIDDLE  ALT=\"537e%5E%28.015t%29=1074\"   DISABLED_style= \"max-width:90%; height:auto;\" >Substitute with the formula. <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=e%5E%28.015t%29=2 ALIGN=MIDDLE  ALT=\"e%5E%28.015t%29=2\"   DISABLED_style= \"max-width:90%; height:auto;\" >Divide by 537. <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.015t=ln%282%29 ALIGN=MIDDLE  ALT=\".015t=ln%282%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >Natural log of both sides. <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=ln%282%29%2F.015 ALIGN=MIDDLE  ALT=\"t=ln%282%29%2F.015\"   DISABLED_style= \"max-width:90%; height:auto;\" >Divide by .015. <BR>\n" );
document.write( "t=46.2 years\r<BR>\n" );
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document.write( " </SPAN>\n" );
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