document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1145972>Question 1145972</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 1870 the average ground temperature in Paris was 11.8°C. Since then it has risen at a nearly constant rate, reaching 13.5°C in 1969.\r<BR>\n" );
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document.write( "(a) Express the temperature T (in °C) in terms of time t (in years), where t = 0 corresponds to the year 1870 and 0 ≤ t ≤ 99. (Give your answer in slope-intercept form.)\r<BR>\n" );
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document.write( "(b) During what year was the average ground temperature 12.7°C? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #767261 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</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=767261\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Two points  (t,T)\r<BR>\n" );
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document.write( "(0,11.8) & (99,13.5)\r<BR>\n" );
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document.write( "First point shows the T axis intercept.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=T=%28%2813.5-11.8%29%2F%2899-0%29%29t%2B11.8 ALIGN=MIDDLE  ALT=\"T=%28%2813.5-11.8%29%2F%2899-0%29%29t%2B11.8\"   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=T=%281.7%2F99%29t%2B11.8 ALIGN=MIDDLE  ALT=\"T=%281.7%2F99%29t%2B11.8\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "For part (b), solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t ALIGN=MIDDLE  ALT=\"t\"   DISABLED_style= \"max-width:90%; height:auto;\" > and substitute for T=12.7.<BR>\n" );
document.write( "Now add t found to 1870. </SPAN>\n" );
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