document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=872483>Question 872483</A>: <I><SPAN STYLE=\"word-break: break-all;\"> radoactive iodine is frequently used in tracer studies involving the thyroid gland. The substance decays according to the equation A(t)=Aoa^-t where Ao is the initial dose and t is the time in days. Find a assuming the half life id 8 days </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #526189 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=526189\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A/A[0] = .5 = e^(-8k)<BR>\n" );
document.write( " ln .5/-8 = k = .0866<BR>\n" );
document.write( "A = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%5B0%5De%5E%28-.0866t%29 ALIGN=MIDDLE  ALT=\"A%5B0%5De%5E%28-.0866t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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