document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=315006>Question 315006</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Here is my question,<BR>\n" );
document.write( "In 1920 the record for a certain race was 45.5 sec, In 1990 it was 44.8 sec, Let R(t)= the record in the race and t= the number of years since 1920<BR>\n" );
document.write( "A:Find a linear equation that fits the data<BR>\n" );
document.write( "B:Use the function in (A) to predict the records in 2003 and 2006<BR>\n" );
document.write( "C: Find the year that the record will be 44.54\r<BR>\n" );
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document.write( "This type of equation has me stumped<BR>\n" );
document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #225367 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=225367\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> in the 70 years between 1920 and 1990, the record decreased .7 sec<BR>\n" );
document.write( "___ so it decreased .01 sec per year ___ this is the slope of the line\r<BR>\n" );
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document.write( "the intercept is the value in the starting year , 45.5\r<BR>\n" );
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document.write( "A.  R(t) = -.01 t + 45.5\r<BR>\n" );
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document.write( "B.  just plug in 83 and 86 for t\r<BR>\n" );
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document.write( "C.  plug in 44.54 for R(t), and solve for t </SPAN>\n" );
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