document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1156715>Question 1156715</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How long will it take a sample of radioactive substance to decay to half of its original​ amount, if it decays according to the function <BR>\n" );
document.write( "​A(t)=800e^-.215t<BR>\n" );
document.write( "where t is the time in​ years? Round your answer to the nearest hundredth year </SPAN>\n" );
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document.write( "​A(t)=800e^-.215t<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%28t%29=800e%5E%28-0.215t%29 ALIGN=MIDDLE  ALT=\"A%28t%29=800e%5E%28-0.215t%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=1%2F2=e%5E%28-0.215t%29 ALIGN=MIDDLE  ALT=\"1%2F2=e%5E%28-0.215t%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=ln%281%2F2%29=-0.215t ALIGN=MIDDLE  ALT=\"ln%281%2F2%29=-0.215t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "etc., etc. </SPAN>\n" );
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