document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1130123>Question 1130123</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A scientist begins with 250 grams of a radioactive substance. After 250 minutes, the sample has decayed to 32 grams. Write an exponential equation f(t)representing this situation. (Let f be the amount of radioactive substance in grams and t be the time in minutes.) \r<BR>\n" );
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document.write( "My previous answers have been: <BR>\n" );
document.write( "250*2 (-t/h)<BR>\n" );
document.write( "250*(.5)^t </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #746795 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</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=746795\">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=f=250%2Ab%5Et ALIGN=MIDDLE  ALT=\"f=250%2Ab%5Et\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=250b%5E250=32 ALIGN=MIDDLE  ALT=\"250b%5E250=32\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%5E250=32%2F250 ALIGN=MIDDLE  ALT=\"b%5E250=32%2F250\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%5E250=16%2F125 ALIGN=MIDDLE  ALT=\"b%5E250=16%2F125\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=250%2Alog%28%28b%29%29=log%28%2816%2F125%29 ALIGN=MIDDLE  ALT=\"250%2Alog%28%28b%29%29=log%28%2816%2F125%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%28%28b%29%29=%281%2F250%29%2Alog%28%2816%2F125%29%29 ALIGN=MIDDLE  ALT=\"log%28%28b%29%29=%281%2F250%29%2Alog%28%2816%2F125%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%28%28b%29%29=-0.0035711 ALIGN=MIDDLE  ALT=\"log%28%28b%29%29=-0.0035711\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=0.991811 ALIGN=MIDDLE  ALT=\"b=0.991811\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "-\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=1%2A0.991811%5Ex=1%2F2 ALIGN=MIDDLE  ALT=\"1%2A0.991811%5Ex=1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2Alog%28%280.991811%29%29=log%28%280.5%29%29 ALIGN=MIDDLE  ALT=\"x%2Alog%28%280.991811%29%29=log%28%280.5%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=x=log%28%280.5%29%29%2Flog%28%280.991811%29%29 ALIGN=MIDDLE  ALT=\"x=log%28%280.5%29%29%2Flog%28%280.991811%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=x=84.3 ALIGN=MIDDLE  ALT=\"x=84.3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=minutes ALIGN=MIDDLE  ALT=\"minutes\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28f=250%2A%281%2F2%29%5E%28t%2F84.3%29%29 ALIGN=MIDDLE  ALT=\"highlight_green%28f=250%2A%281%2F2%29%5E%28t%2F84.3%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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