SOLUTION: In 1995 the life expectancy of males in a certain country was 64.7 years. In 2000, it was 68.0 years. Let E represent the life expectancy in year t and let t represent the number o

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Question 366492: In 1995 the life expectancy of males in a certain country was 64.7 years. In 2000, it was 68.0 years. Let E represent the life expectancy in year t and let t represent the number of years since 1995.
The linear function E(t) that fits the data is
E(t)=
Use the function to predict the life expectancy of males in 2003.
E(8)=
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi, 

Applying the slope-intercept format(y= mx + b) for a linear equation.



m = (68-64.7) / (2000-1995) = (3.3/5)

68 = (3.3/5)*5 + b

68 - 3.3 =  b

64.7 = b

linear ecpression is:

E = (3.3/5)t + 64.7  where t is the number of years since 1995.

In the year 2003 (8 years from 1995)

E(8)= (3.3/5)*8 + 64.7

E(8) = 5.28 + 64.7

E(8) = 69.98