SOLUTION: 1992 the life expectancy of males in a certain county was 69.4 years, in 1998 it was 72.9 years, let E repersent the life expectancy in year, and t repersent the number of years si

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: 1992 the life expectancy of males in a certain county was 69.4 years, in 1998 it was 72.9 years, let E repersent the life expectancy in year, and t repersent the number of years si      Log On


   

Question 210754: 1992 the life expectancy of males in a certain county was 69.4 years, in 1998 it was 72.9 years, let E repersent the life expectancy in year, and t repersent the number of years since 1992.
E(T)=___t+____
E(11)=_______
Answer by RAY100(1637) About Me  (Show Source):
You can put this solution on YOUR website!
E(t) = 69.4 + ,5833t
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where 69.4 = E(0),,,.5833 = (72.9-69.4)/6
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check,,,,E(6) = 69.4 +6(.58833) = 72.9,,,,,ok
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E(11) = 69.4 + 11(.58833) = 75.8
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