Posted by Flossie on .
In 1991, the life expectancy of males in a certain country was 70.4 years. In 1996, it was 72.9 years. Let E represent the life expectancy in year t and let t represent the number of years since 1991. What is the linear function E(t) that fits the data?

math 
Reiny,
if you type something like
life expectancy
into the search window at the top right, you will find all kinds of problems almost verbatim like yours.