document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=966028>Question 966028</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The half-life of a substance is 7 hours, Using A=A0eKT, Find K  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #590437 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=590437\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This, A=A0eKT, does not mean what you want it to mean.\r<BR>\n" );
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document.write( "THIS means what you want, using pure text:  A=A[0]e^(KT)\r<BR>\n" );
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document.write( "Inside the rendering tags, you find  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=A%5B0%5De%5E%28KT%29 ALIGN=MIDDLE  ALT=\"A=A%5B0%5De%5E%28KT%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Now to solve for K,  take logarithms of the left and right sides, and then substitute appropriate values:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28A%29=ln%28A%5B0%5D%29-KT%2Aln%28e%29 ALIGN=MIDDLE  ALT=\"ln%28A%29=ln%28A%5B0%5D%29-KT%2Aln%28e%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=ln%28A%29-ln%28A%5B0%5D%29=-KT%2A1 ALIGN=MIDDLE  ALT=\"ln%28A%29-ln%28A%5B0%5D%29=-KT%2A1\"   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=KT=ln%28A%5B0%5D%29-ln%28A%29 ALIGN=MIDDLE  ALT=\"KT=ln%28A%5B0%5D%29-ln%28A%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=K=%28ln%28A%5B0%5D%29-ln%28A%29%29%2FT ALIGN=MIDDLE  ALT=\"K=%28ln%28A%5B0%5D%29-ln%28A%29%29%2FT\"   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=highlight_green%28K=ln%28A%5B0%5D%2FA%29%2FT%29 ALIGN=MIDDLE  ALT=\"highlight_green%28K=ln%28A%5B0%5D%2FA%29%2FT%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Then substitution,<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28K=ln%282%29%2F7%29 ALIGN=MIDDLE  ALT=\"highlight%28K=ln%282%29%2F7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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