document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1032278>Question 1032278</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Newton’s law of cooling states that the rate of cooling of an object is proportional to the temperature difference between the object and its surroundings. So the rate of cooling for a bottle of lemonade at a room temperature of 75°F which is placed into a refrigerator with temperature of 38°F can be modeled by dT/dt=k(T-38) where T(t) is the temperature of the lemonade after t minutes and T(0) = 75. After 30 minutes the lemonade has cooled to 60°F, so T(30) = 60.<BR>\n" );
document.write( "To the nearest degree, what is the temperature of the lemonade after an additional 30 minutes? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #646915 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=646915\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is just a follow-up to the other problem.\r<BR>\n" );
document.write( "\n" );
document.write( "After 30 minutes, the temperature was 60°F.\r<BR>\n" );
document.write( "\n" );
document.write( "After an additional 30 minutes, the temperature is T(60).\r<BR>\n" );
document.write( "\n" );
document.write( "The equation that was obtained previously was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=T%28t%29+=+38%2B37%2822%2F37%29%5E%28t%2F30%29 ALIGN=MIDDLE  ALT=\"T%28t%29+=+38%2B37%2822%2F37%29%5E%28t%2F30%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
document.write( "\n" );
document.write( "==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=T%2860%29+=+38%2B37%2822%2F37%29%5E%2860%2F30%29+=+38%2B37%2822%2F37%29%5E2%7D+ ALIGN=MIDDLE  ALT=\"T%2860%29+=+38%2B37%2822%2F37%29%5E%2860%2F30%29+=+38%2B37%2822%2F37%29%5E2%7D+\"   DISABLED_style= \"max-width:90%; height:auto;\" >= 51°F, to the nearest degree. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );