document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=935911>Question 935911</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The coast-down time y for a car as it drops 10 mph from an initial speed x depends on several factors, such as average drag, tire pressure, and whether the transmission is in neutral. The table gives coast-down time in seconds for a car under standard conditions for selected speeds.\r<BR>\n" );
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document.write( "Initial speed      Coast-down time      Initial speeed       Coast-down time<BR>\n" );
document.write( "  (in mph)           (in seconds)         (in mph)             (in seconds)<BR>\n" );
document.write( "    30                    30                 50                     17<BR>\n" );
document.write( "    35                    26                 55                     15<BR>\n" );
document.write( "    40                    22                 60                     14<BR>\n" );
document.write( "    45                    19                 65                     13\r<BR>\n" );
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document.write( "Use a quadratic regression feature of a graphing calculator to find the quadratic function g that best fits the data\r<BR>\n" );
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document.write( "g(x)=__x^2-__x+__<BR>\n" );
document.write( "(Round to four decimal places as needed) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #569304 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=569304\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y = 0.0119047619xx - 1.611904762x + 67.64285714<BR>\n" );
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document.write( "answer:<BR>\n" );
document.write( "y = 0.0119xx - 1.6119x + 67.6429<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );