document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1154570>Question 1154570</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A drug is eliminated from the body through the kidney in such a way that over each hour, 25% of the amount present at the beginning of the hour is eliminated. Let t be the amount of time (in hours) since the drug was first taken, and A0 the initial amount of the drug in the body. The amount of drug present in the body after t hours is given by:\r<BR>\n" );
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document.write( "A(t)=A0e^(kt)<BR>\n" );
document.write( "where k is some constant.  How long does it take before the amount of drug in the body is half of the initial amount (Round answer to two decimal places).  Do not include units with your answer. </SPAN>\n" );
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document.write( "that over each hour, 25% of the amount present at the beginning of the hour is eliminated.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%28t%29=A%5Bo%5De%5E%28kt%29 ALIGN=MIDDLE  ALT=\"A%28t%29=A%5Bo%5De%5E%28kt%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.75=1.00e%5E%281%2Ak%29 ALIGN=MIDDLE  ALT=\"0.75=1.00e%5E%281%2Ak%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=e%5E%28k%29=0.75 ALIGN=MIDDLE  ALT=\"e%5E%28k%29=0.75\"   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%28e%5Ek%29=ln%280.75%29 ALIGN=MIDDLE  ALT=\"ln%28e%5Ek%29=ln%280.75%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=k=ln%280.75%29 ALIGN=MIDDLE  ALT=\"k=ln%280.75%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28k=-0.2877%29 ALIGN=MIDDLE  ALT=\"highlight%28k=-0.2877%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=highlight%28A%28t%29=A%5Bo%5De%5E%28-0.2877t%29%29 ALIGN=MIDDLE  ALT=\"highlight%28A%28t%29=A%5Bo%5De%5E%28-0.2877t%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "You could round to  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=-0.29 ALIGN=MIDDLE  ALT=\"k=-0.29\"   DISABLED_style= \"max-width:90%; height:auto;\" >  if you want.<BR>\n" );
document.write( " </SPAN>\n" );
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