Problema Solution
In 1991 the life expectancy of males was 61.7 years,
In 1998 it was 65.5 years
Let E represent life expectancy in years and let t represent the
number of years since 1991.
The linear function E(t) that fits the data is e(t)=_____ ,t+____
Use the function to predict the life expectancy of males in 2006
E(15)=____ round to the nearest tenth.
Answer provided by our tutors
we get slope = 65.5-61.7 / 1998 - 1991 = 3.8/7 = 0.5
E(t) = 0.5t + 61.7
E(15) = 69.2