document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1072026>Question 1072026</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A 15 g sample of radioactive iodine decays in such a way that the mass remaining after t<BR>\n" );
document.write( "days is given by m(t) = 15e&#8722;0.087t, where m(t) is measured in grams. After how many days are there<BR>\n" );
document.write( "only 5 g remaining? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #686938 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=686938\">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=m%28t%29=cross%2815e-0.087t%29 ALIGN=MIDDLE  ALT=\"m%28t%29=cross%2815e-0.087t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%28t%29=15e%5E%28-0.087t%29 ALIGN=MIDDLE  ALT=\"m%28t%29=15e%5E%28-0.087t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >------THIS way.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28m%29=ln%2815%2Ae%5E%28-0.087t%29%29 ALIGN=MIDDLE  ALT=\"ln%28m%29=ln%2815%2Ae%5E%28-0.087t%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%2815%29-0.087t=ln%28m%29 ALIGN=MIDDLE  ALT=\"ln%2815%29-0.087t=ln%28m%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-0.087t=ln%28m%29-ln%2815%29 ALIGN=MIDDLE  ALT=\"-0.087t=ln%28m%29-ln%2815%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.087t=ln%2815%29-ln%28m%29 ALIGN=MIDDLE  ALT=\"0.087t=ln%2815%29-ln%28m%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_green%28t=%28ln%2815%2Fm%29%29%2F0.087%29 ALIGN=MIDDLE  ALT=\"highlight_green%28t=%28ln%2815%2Fm%29%29%2F0.087%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "m=5, evaluate t.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=ln%2815%2F5%29%2F0.087 ALIGN=MIDDLE  ALT=\"t=ln%2815%2F5%29%2F0.087\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=ln%283%29%2F0.087 ALIGN=MIDDLE  ALT=\"t=ln%283%29%2F0.087\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28t=12.6%29 ALIGN=MIDDLE  ALT=\"highlight%28t=12.6%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > or about 12 and a half day </SPAN>\n" );
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