document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=895794>Question 895794</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A radio-active element decays exponentially and the expression is given by : <BR>\n" );
document.write( "x(t)=(1/4)^(t/1024)<BR>\n" );
document.write( "where x(t) is the amount of radio-active element decayed as a function of time<BR>\n" );
document.write( "(time is in years).<BR>\n" );
document.write( " If the amount left is 0.00135, how long did it take to decay? \r<BR>\n" );
document.write( "\n" );
document.write( "I got the answer as 1. Am I correct? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #543057 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=543057\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 0.999998 years<BR>\n" );
document.write( "= 1 year minus 57.6 seconds<BR>\n" );
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document.write( "You're correct. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );