document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1027427>Question 1027427</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am having issues with word problems, just not sure how to set them up and then complete. \r<BR>\n" );
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document.write( "Radioactive carbon-14 decays according to the function Q(t)=Q0e^-0.000121t where t is time in years, Q(t) is the quantity remaining at time t, and Q0 is the amount present at t=0. Estimate the age of bone fragment if 17% of the original quantity of carbon-14 remains.\r<BR>\n" );
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document.write( "Thank you for all your help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #642656 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=642656\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> They are saying that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+Q%28t%29+=+.17Q%280%29+ ALIGN=MIDDLE  ALT=\"+Q%28t%29+=+.17Q%280%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >. This means,<BR>\n" );
document.write( "at present, you have 17% of the amount you started with<BR>\n" );
document.write( "which was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+Q%280%29+ ALIGN=MIDDLE  ALT=\"+Q%280%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Now I can rewrite the formula:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+Q%28t%29+=+Q%280%29%2Ae%5E%28-.000121t+%29+ ALIGN=MIDDLE  ALT=\"+Q%28t%29+=+Q%280%29%2Ae%5E%28-.000121t+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.17Q%280%29+=+Q%280%29%2Ae%5E%28-.000121t+%29+ ALIGN=MIDDLE  ALT=\"+.17Q%280%29+=+Q%280%29%2Ae%5E%28-.000121t+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now divide both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+Q%280%29+ ALIGN=MIDDLE  ALT=\"+Q%280%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.17+=+e%5E%28-.000121t+%29+ ALIGN=MIDDLE  ALT=\"+.17+=+e%5E%28-.000121t+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "Take the natural log of both sides<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+ln%28+.17+%29+=+-.000121t+ ALIGN=MIDDLE  ALT=\"+ln%28+.17+%29+=+-.000121t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-1.772+=+-.000121t+ ALIGN=MIDDLE  ALT=\"+-1.772+=+-.000121t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+1.772+%2F+.000121+ ALIGN=MIDDLE  ALT=\"+t+=+1.772+%2F+.000121+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+14644.628+ ALIGN=MIDDLE  ALT=\"+t+=+14644.628+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "The age is 14,645 years <BR>\n" );
document.write( "Check my math & maybe get another opinion </SPAN>\n" );
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