document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=162310>Question 162310</A>: <I><SPAN STYLE=\"word-break: break-all;\"> CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM:\r<BR>\n" );
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document.write( "Suppose the amount of a radioactive element remaining in a sample of 100 milligrams after x years can be described by A(x) = 100e^-0.01657x. How much is remaining after 257 years? Round to the nearest hundredth of a milligram.\r<BR>\n" );
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document.write( "a. 0.01 milli<BR>\n" );
document.write( "b. 1.42 milli<BR>\n" );
document.write( "c. 425.85 milli<BR>\n" );
document.write( "d. 7070.31 milli </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #119623 by </B><A HREF=/tutors/aboutme.mpl?userid=gonzo><B>gonzo(654)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=gonzo><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=119623\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> formula is given as:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%28x%29+=+100%2Ae%5E%28-.01657%2Ax%29 ALIGN=MIDDLE  ALT=\"a%28x%29+=+100%2Ae%5E%28-.01657%2Ax%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "since x = 257, equation becomes<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%28x%29+=+100%2Ae%5E%28-.01657%2A257%29 ALIGN=MIDDLE  ALT=\"a%28x%29+=+100%2Ae%5E%28-.01657%2A257%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "which becomes<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%28x%29+=+100%2Ae%5E%28-4.25849%29 ALIGN=MIDDLE  ALT=\"a%28x%29+=+100%2Ae%5E%28-4.25849%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "which becomes<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%28x%29+=+100%2A.014143643 ALIGN=MIDDLE  ALT=\"a%28x%29+=+100%2A.014143643\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "which becomes<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%28x%29+=+1.41436432 ALIGN=MIDDLE  ALT=\"a%28x%29+=+1.41436432\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "rounded to the nearest hundredth of a milligram equals<BR>\n" );
document.write( "1.41<BR>\n" );
document.write( "which is close to 1.42 but not quite right on.<BR>\n" );
document.write( "since that's the only choice real close, i would assume 1.42 is the answer they are looking for.<BR>\n" );
document.write( "answer is b. 1.42 </SPAN>\n" );
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