document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=121174>Question 121174</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The radioactive isotope mathium-411 is a gas that decays exponentially with time as described by the equation A=P(1/2)^t/48,where A is the amount of mathium-411 present at a given time,P is the initial amount of mathium-411,and t is the time in minutes. If the  initial amount of mathium-411 was 80g,how much would remain after 2 hours? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #88901 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=88901\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The radioactive isotope mathium-411 is a gas that decays exponentially with time as described by the equation A=P(1/2)^t/48,where A is the amount of mathium-411 present at a given time,P is the initial amount of mathium-411,and t is the time in minutes. If the  initial amount of mathium-411 was 80g,how much would remain after 2 hours?<BR>\n" );
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document.write( "2 hrs. is 120 minutes so you get:\r<BR>\n" );
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document.write( "A(120)=80*(1/2)^(120/48)= 14.1421 grams<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.  </SPAN>\n" );
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