document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=46771>Question 46771</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0534494498/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> The amount of a radioactive tracer remaining after t days is given by A=A0 e^-0.058t, where A0 is the starting amount at the beginning of the time period. How many days will it take for one half of the original amount to decay?<BR>\n" );
document.write( "10 days<BR>\n" );
document.write( "11 days<BR>\n" );
document.write( "12 days<BR>\n" );
document.write( "13 days\r<BR>\n" );
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document.write( "Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #30947 by </B><A HREF=/tutors/aboutme.mpl?userid=adamchapman><B>adamchapman(301)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=adamchapman><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=30947\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=A%5B0%5D+e%5E-0.058t ALIGN=MIDDLE  ALT=\"A=A%5B0%5D+e%5E-0.058t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=A%5B0%5D%2F2 ALIGN=MIDDLE  ALT=\"A=A%5B0%5D%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%5B0%5D%2F2=A%5B0%5D+e%5E-0.058t ALIGN=MIDDLE  ALT=\"A%5B0%5D%2F2=A%5B0%5D+e%5E-0.058t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Dividing by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%5B0%5D ALIGN=MIDDLE  ALT=\"A%5B0%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F2=e%5E-0.058t ALIGN=MIDDLE  ALT=\"1%2F2=e%5E-0.058t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%280.5%29=-0.058t ALIGN=MIDDLE  ALT=\"ln%280.5%29=-0.058t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=-ln%280.5%29%2F0.058 ALIGN=MIDDLE  ALT=\"t=-ln%280.5%29%2F0.058\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=11.9508 ALIGN=MIDDLE  ALT=\"t=11.9508\"   DISABLED_style= \"max-width:90%; height:auto;\" > days.\r<BR>\n" );
document.write( "<BR>\n" );
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document.write( "I hope this helps,<BR>\n" );
document.write( "Adam<BR>\n" );
document.write( "P.S. please visit my website, it may be helpful to you. The address is www.geocities.com/quibowibbler<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );