document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1004575>Question 1004575</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At the beginning of an experiment, a scientist has 256 grams of radioactive goo. After 105 minutes, her sample has decayed to 16 grams. \r<BR>\n" );
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document.write( "What is the half-life of the goo in minutes?  <BR>\n" );
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document.write( "Find a formula for G(t), the amount of goo remaining at time t. G(t) = <BR>\n" );
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document.write( "How many grams of goo will remain after 17 minutes? <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 #621042 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=621042\">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=G=256%2Ae%5E%28-kt%29 ALIGN=MIDDLE  ALT=\"G=256%2Ae%5E%28-kt%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > decay model\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28G%29=ln%28256%29-kt ALIGN=MIDDLE  ALT=\"ln%28G%29=ln%28256%29-kt\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28G%29-ln%28256%29=-kt ALIGN=MIDDLE  ALT=\"ln%28G%29-ln%28256%29=-kt\"   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%28kt=ln%28256%29-ln%28G%29%29 ALIGN=MIDDLE  ALT=\"highlight_green%28kt=ln%28256%29-ln%28G%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=k=%281%2Ft%29ln%28256%2FG%29 ALIGN=MIDDLE  ALT=\"k=%281%2Ft%29ln%28256%2FG%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=%281%2F105%29%28ln%28256%2F16%29%29 ALIGN=MIDDLE  ALT=\"k=%281%2F105%29%28ln%28256%2F16%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=highlight%28k=0.02641%29 ALIGN=MIDDLE  ALT=\"highlight%28k=0.02641%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > based on minutes and grams\r<BR>\n" );
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document.write( "HALF-LIFE<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=ln%28256%2F128%29%2F0.02641 ALIGN=MIDDLE  ALT=\"t=ln%28256%2F128%29%2F0.02641\"   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=26.25%2Aminutes%29 ALIGN=MIDDLE  ALT=\"highlight%28t=26.25%2Aminutes%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Use the model as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=G=256%2Ae%5E%28-0.02641%2At%29 ALIGN=MIDDLE  ALT=\"G=256%2Ae%5E%28-0.02641%2At%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >  for t=17 to find how much remains after that amount of time. </SPAN>\n" );
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