document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1032480>Question 1032480</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An initial amount of a radioactive substance y0 is given, along with information about the amount remaining after a given time t in appropriate units. For an equation of the form y = y0ekt that models the situation, give the exact value of k in terms of natural logarithms: y0 = 2.56 lb; After 2 yr, 0.64 lb remains.<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 #647143 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=647143\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=Ie%5E%28kt%29 ALIGN=MIDDLE  ALT=\"y=Ie%5E%28kt%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, changed y sub 0  to I for easier typing of text;\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28Ie%5E%28kt%29%29=ln%28y%29 ALIGN=MIDDLE  ALT=\"ln%28Ie%5E%28kt%29%29=ln%28y%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%28I%29%2Bkt%2Aln%28e%29=ln%28y%29 ALIGN=MIDDLE  ALT=\"ln%28I%29%2Bkt%2Aln%28e%29=ln%28y%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%2A1=ln%28y%29-ln%28I%29 ALIGN=MIDDLE  ALT=\"kt%2A1=ln%28y%29-ln%28I%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28k=%281%2Ft%29%28ln%28y%2FI%29%29%29 ALIGN=MIDDLE  ALT=\"highlight%28k=%281%2Ft%29%28ln%28y%2FI%29%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Substitute the given values and evaluate. </SPAN>\n" );
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