document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1002738>Question 1002738</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2.1. An anthropologist finds bone that her instruments measure it as  0.717% of the amount of Carbon-14 the bones would have contained when the person was alive. How long ago did the person die?<BR>\n" );
document.write( "The half life of carbon 14 is 5,730 years. Round your answer to the nearest thousand.<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 #619600 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=619600\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> When person was alive, 1.000% of expected Carbon-14; today, found 0.717%.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C=Ie%5E%28-kt%29 ALIGN=MIDDLE  ALT=\"C=Ie%5E%28-kt%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > decay model\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28C%29=ln%28Ie%5E%28-kt%29%29 ALIGN=MIDDLE  ALT=\"ln%28C%29=ln%28Ie%5E%28-kt%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28C%29=ln%28I%29-kt%2Aln%28e%29 ALIGN=MIDDLE  ALT=\"ln%28C%29=ln%28I%29-kt%2Aln%28e%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28C%29=ln%28I%29-kt ALIGN=MIDDLE  ALT=\"ln%28C%29=ln%28I%29-kt\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28C%29-ln%28I%29=-kt ALIGN=MIDDLE  ALT=\"ln%28C%29-ln%28I%29=-kt\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=kt=ln%28I%29-ln%28C%29 ALIGN=MIDDLE  ALT=\"kt=ln%28I%29-ln%28C%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=kt=ln%28I%2FC%29 ALIGN=MIDDLE  ALT=\"kt=ln%28I%2FC%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >----------Use again later<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=ln%28I%2FC%29%2Ft ALIGN=MIDDLE  ALT=\"k=ln%28I%2FC%29%2Ft\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Substitute values to evaluate k using half-life<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=ln%281%2F%281%2F2%29%29%2F5730 ALIGN=MIDDLE  ALT=\"k=ln%281%2F%281%2F2%29%29%2F5730\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=ln%282%29%2F5730 ALIGN=MIDDLE  ALT=\"k=ln%282%29%2F5730\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28k=0.00012097%29 ALIGN=MIDDLE  ALT=\"highlight_green%28k=0.00012097%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Model is now  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C=I%2Ae%5E%28-0.00012097t%29 ALIGN=MIDDLE  ALT=\"C=I%2Ae%5E%28-0.00012097t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "How old is the found bone?<BR>\n" );
document.write( "from <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=kt=ln%28I%2FC%29 ALIGN=MIDDLE  ALT=\"kt=ln%28I%2FC%29\"   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%28I%2FC%29%2Fk ALIGN=MIDDLE  ALT=\"t=ln%28I%2FC%29%2Fk\"   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%281%2F0.717%29%2F0.00012097 ALIGN=MIDDLE  ALT=\"t=ln%281%2F0.717%29%2F0.00012097\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28t=2750%2Ayears%29 ALIGN=MIDDLE  ALT=\"highlight%28t=2750%2Ayears%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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