document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=617873>Question 617873</A>: <I><SPAN STYLE=\"word-break: break-all;\">  the number of milligrams of a diabetic drug in a person's system after t hours is given by the function D(t)=20e^ (-0.4t). In this function, how many milligrams of drug did this patient initially take? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #388626 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=388626\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the number of milligrams of a diabetic drug in a person's system after t hours is given by the function D(t)=20e^ (-0.4t). In this function, how many milligrams of drug did this patient initially take?<BR>\n" );
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document.write( "Answer: 20 milligrams<BR>\n" );
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document.write( "Because:<BR>\n" );
document.write( "D(t)=20e^ (-0.4t)<BR>\n" );
document.write( "is in the general form of an exponential function:<BR>\n" );
document.write( "A = Ao*e^(kt)<BR>\n" );
document.write( "where<BR>\n" );
document.write( "A is amount after time t<BR>\n" );
document.write( "Ao is the initial amount<BR>\n" );
document.write( "k is the rate of increase/decrease<BR>\n" );
document.write( "t is time\r<BR>\n" );
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document.write( " </SPAN>\n" );
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