document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=151178>Question 151178</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Story problem:  A can of soda at 79 degrees F is placed in a refrigerator that maintains a constant temperature of 36 degrees F.  The temperature T of the soda t minutes after it is placed in the refrigerator is given by   T(t)=36+43e^-.058t.\r<BR>\n" );
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document.write( "Part a)  Find the temperature to the nearest degree of the soda 10 minutes after it is placed in the refrigerator.\r<BR>\n" );
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document.write( "I substituted 10 into the equation and got 60 degrees F.  I understand this part.\r<BR>\n" );
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document.write( "Part b)  When, to the nearest minute, will the temperature of the soda be 45 degrees F?  HELP!  I think that you need to plug in equations to graph it but I don't know what to plug in.  \r<BR>\n" );
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document.write( "Thanks,<BR>\n" );
document.write( "Rose </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #111079 by </B><A HREF=/tutors/aboutme.mpl?userid=vleith><B>vleith(2983)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=vleith><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=111079\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You are correct on part a<BR>\n" );
document.write( "Part b asks when the temp will be 45 degrees<BR>\n" );
document.write( "Given<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=T%28t%29=36%2B43e%5E%28-.058t%29 ALIGN=MIDDLE  ALT=\"T%28t%29=36%2B43e%5E%28-.058t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=45=36%2B43e%5E%28-.058t%29 ALIGN=MIDDLE  ALT=\"45=36%2B43e%5E%28-.058t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9+=+43e%5E%28-.058t%29 ALIGN=MIDDLE  ALT=\"9+=+43e%5E%28-.058t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F43+=+e%5E%28-.058t%29 ALIGN=MIDDLE  ALT=\"9%2F43+=+e%5E%28-.058t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.209+=+e%5E%28-.058t%29 ALIGN=MIDDLE  ALT=\"0.209+=+e%5E%28-.058t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ln%280.209%29+=+ln%28e%5E%28-.058t%29%29 ALIGN=MIDDLE  ALT=\"ln%280.209%29+=+ln%28e%5E%28-.058t%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-1.565+=+-.058t ALIGN=MIDDLE  ALT=\"-1.565+=+-.058t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.565%2F0.058+=+t ALIGN=MIDDLE  ALT=\"1.565%2F0.058+=+t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.565%2F0.058+=+27 ALIGN=MIDDLE  ALT=\"1.565%2F0.058+=+27\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "about 27  minutes later.\r<BR>\n" );
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document.write( "Check your answer by plugging 27 into the original equation </SPAN>\n" );
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