document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1129811>Question 1129811</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the function D(h)=7e^-0.3h can be used to find the number of milligrams D of a certain drug that is in a patient's bloodstream h hours after the drug has been administered. \r<BR>\n" );
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document.write( "a. how many milligrams will be presented after 2 hours?\r<BR>\n" );
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document.write( "b. when the number of milligrams reaches 1, the drug is to be administered again. in how many hours will the drug need to be administered again? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #746441 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39625)</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=746441\">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=D%28h%29=7e%5E%28-0.3h%29 ALIGN=MIDDLE  ALT=\"D%28h%29=7e%5E%28-0.3h%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "h if D(h)=1:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%28D%29=ln%287e%5E%28-0.3h%29%29 ALIGN=MIDDLE  ALT=\"ln%28D%29=ln%287e%5E%28-0.3h%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=ln%28D%29=ln%287%29-0.3h%2Aln%28e%29 ALIGN=MIDDLE  ALT=\"ln%28D%29=ln%287%29-0.3h%2Aln%28e%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=-0.3h=ln%28D%29-ln%287%29 ALIGN=MIDDLE  ALT=\"-0.3h=ln%28D%29-ln%287%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=h=%28-1%2F0.3%29%28ln%28D%29-ln%287%29%29 ALIGN=MIDDLE  ALT=\"h=%28-1%2F0.3%29%28ln%28D%29-ln%287%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "substitute<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h=%28-1%2F0.3%29%28ln%281%29-ln%287%29%29 ALIGN=MIDDLE  ALT=\"h=%28-1%2F0.3%29%28ln%281%29-ln%287%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=h=%281%2F0.3%29%28ln%287%29-ln%281%29%29 ALIGN=MIDDLE  ALT=\"h=%281%2F0.3%29%28ln%287%29-ln%281%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=highlight%28h=6.5%29 ALIGN=MIDDLE  ALT=\"highlight%28h=6.5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "6 hours 30  minutes<BR>\n" );
document.write( "OR<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6%261%2F2 ALIGN=MIDDLE  ALT=\"6%261%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=hours ALIGN=MIDDLE  ALT=\"hours\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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