In 1960, the world record for the men’s mile was 3.91 minutes. In 1980, the record mile was 3.81 minutes.
Write a linear model that represents the world
record (in minutes) for the men’s mile as a function
of the number of years since 9160.
Use the model to estimate the record time in 2020
and 2040. How accurate is the 2020 estimate?