In1920, the record for a certain race was 46.9

46.9 sec. In 1940

1940, it was 46.7

46.7 sec.

Let R(t)equals

=the record in the race and tequals

=the number of years since 1920.

a) Find a linear function that fits the data.

b) Use the function in(a) to predict the record in 2003 and in 2006.

c) Find the year when the record will be 45.92

45.92 sec.

Find a linear function that fits the data.

R(t)equals

=

negative 0.01 t plus 46.9

0.01t+46.9

(Round to the nearesthundredth.)

What is the predicted record for2003?

------sec

(Round to the nearesthundredth.)