# Math 117

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In 1991 the life expectancy of males in a certain country was 73.7 years old, In 19951995 it was 77.4 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 fits the data. Use the function to predict the life expectancy of males in 2008

• Math 117 -

let 1991 be t=0
then 1991 life exp ---> (0,73.7)
and 1995 life exp ----> (4,77.4)

slope = (77.4 - 73.7)/4 = .925

E(t) = .925t + 73.7

2008 ----> t = 17
E(17) = .925(17) + 73.7 = 89.425

What is the name of that country? Utopia?

• Math 117 -

Sounds like it doesn't it? I have been working nights and trying to get this assignment done sometimes the simplest thing seems way too hard. I appreciate your help, Shauna

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