In 1920, the record for a certain race was 46.6 sec. In 1960, it was 45.8 sec. Let R(t) = the record in the race and t=the number of years since 1920.?
a) Find a linear function that fits the data. ?
b) Use the function in?
c) to predict the record in 2003 and in 2006. ?
d) Find the year when the record will be 44.62 sec.