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Question 338731: In 1993, the life expectancy of males in a certain country was 69.1 years. In 2000,it was 71.7 years. Let e represent the life expectancy in year t and let t represent the numbers of years since 1993.
The linear function E(t)that fits the data is
E(t)=
Use the function to predict the life expectancy of males in 2005
E(12)=
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! In 1993, the life expectancy of males in a certain country was 69.1 years.
(0,69.1)
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In 2000,it was 71.7 years.
(7,71.7)
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slope = (71.7-69.1)/(7-0) = 2.6/7 = 13/35
intercept = E(0) = 69.1
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Let E represent the life expectancy in year t and let t represent the numbers of years since 1993.
The linear function E(t)that fits the data is
E(t)= (13/35)t + 69.1
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Use the function to predict the life expectancy of males in 2005
E(12)= (13/35)12+69.1
E(12) = 73.56 years
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Cheers,
Stan H.
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