document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1176054>Question 1176054</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I tried to do this problem with the example from the site, yet couldn't find the right answer. Please I need help on this!!\r<BR>\n" );
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document.write( "A roasted turkey is taken from an oven when its temperature has reached 185 Fahrenheit and is placed on a table in a room where the temperature is 75 Fahrenheit. Give answers accurate to at least 2 decimal places.\r<BR>\n" );
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document.write( "(a) If the temperature of the turkey is 150 Fahrenheit after half an hour, what is its temperature after 45 minutes?\r<BR>\n" );
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document.write( "(b) When will the turkey cool to 100 Fahrenheit?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #801972 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=801972\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> F(t)=Fs+(Fo-Fs)*e^(-kt)<BR>\n" );
document.write( "150=75+(185-75)e^(-30k)<BR>\n" );
document.write( "75=110e^(-30k)<BR>\n" );
document.write( "(75/110)=15/22=e^(-30k)<BR>\n" );
document.write( "ln both sides<BR>\n" );
document.write( "-0.3830=-30k<BR>\n" );
document.write( "0.012767=k, but round at the end<BR>\n" );
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document.write( "F(45)=75+(110)*e^(-40*0.012767)<BR>\n" );
document.write( "e^(-0.51067)=0.60001<BR>\n" );
document.write( "110*0.60001=66.00<BR>\n" );
document.write( "add to 75 and temperature is 141.00 degrees<BR>\n" );
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document.write( "100=75+110*e^(-0.012767*t)<BR>\n" );
document.write( "25/110=5/22=e^(-0.012767*t)<BR>\n" );
document.write( "ln both sides<BR>\n" );
document.write( "-1.4816=-0.012767t<BR>\n" );
document.write( "t=116.05 minutes\r<BR>\n" );
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