document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=477838>Question 477838</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The half-life of a certain radioactive material is 76 hours. An initial amount of the material has a mass of 794 kg.\r<BR>\n" );
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document.write( "1. Write an exponential function that models the decay of this material.\r<BR>\n" );
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document.write( "2. Calculate the amount of radioactive material remaining after 15 hours. Round your answer to the nearest thousandth.<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 #327435 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=327435\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  The half-life of a certain radioactive material is 76 hours. An initial amount of the material has a mass of 794 kg. <BR>\n" );
document.write( "1. Write an exponential function that models the decay of this material.<BR>\n" );
document.write( "A(t) = 794(1/2)^(t/76)<BR>\n" );
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document.write( "2. Calculate the amount of radioactive material remaining after 15 hours. Round your answer to the nearest thousandth.<BR>\n" );
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document.write( "A(15) = 794(1/2)^(15/76)<BR>\n" );
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document.write( "A(15) = 794*(0.8721)<BR>\n" );
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document.write( "A(15) = 692.48 kg<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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