document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1201551>Question 1201551</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The radioactive isotope of potassium-42, which is a vital in the diagnosis of brain tumors, has a half life of 12.36 hours.\r<BR>\n" );
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document.write( "Determine the exponential decay model that represents the mass of potassium-42?\r<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 #835988 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</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=835988\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -------------------------------------------------------<BR>\n" );
document.write( "... has a half life of 12.36 hours.<BR>\n" );
document.write( "Determine the exponential decay model that re....<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=p%281%2F2%29%5E%28x%2F12.36%29 ALIGN=MIDDLE  ALT=\"y=p%281%2F2%29%5E%28x%2F12.36%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, unless you need some other specific form.\r<BR>\n" );
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document.write( "Another way<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=pe%5E%28kx%29 ALIGN=MIDDLE  ALT=\"y=pe%5E%28kx%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28y%29=ln%28p%29%2Bln%28e%5E%28kx%29%29 ALIGN=MIDDLE  ALT=\"ln%28y%29=ln%28p%29%2Bln%28e%5E%28kx%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%28y%29=ln%28p%29%2Bkx%2Aln%28e%29 ALIGN=MIDDLE  ALT=\"ln%28y%29=ln%28p%29%2Bkx%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%28y%29-ln%28p%29=kx ALIGN=MIDDLE  ALT=\"ln%28y%29-ln%28p%29=kx\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=%281%2Fx%29%28ln%28y%29-ln%28p%29%29 ALIGN=MIDDLE  ALT=\"k=%281%2Fx%29%28ln%28y%29-ln%28p%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and using your given half life information<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=%281%2F12.36%29%28ln%280.5%29-ln%281%29%29 ALIGN=MIDDLE  ALT=\"k=%281%2F12.36%29%28ln%280.5%29-ln%281%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=k=%281%2F12.36%29%28-ln%282%29%29 ALIGN=MIDDLE  ALT=\"k=%281%2F12.36%29%28-ln%282%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=pe%5E%28-%28ln%282%29%2F12.36%29x%29 ALIGN=MIDDLE  ALT=\"y=pe%5E%28-%28ln%282%29%2F12.36%29x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >---------------y=pe^(-(ln(2)/12.36)x)\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=-0.0561 ALIGN=MIDDLE  ALT=\"k=-0.0561\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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