Question 252643
set t=year and R(t)=race time use r(t) as the y  and t as the x
find the find the slope difference in y's over difference in x's
m is slope
m=(y1-y2)/(x1-x2)
then plug one point data as y and x
y=m(x)+b
and solve for b
then substitute r(t) for y and t for x
and then substitute 2003 and later 2006 for t
and find r(t)
for the final question, find t when r(t)=44.62