SOLUTION: can you help? in 1990 the life expectancy was 62.3 yrs and in 1995 it was 65.8 using the linear function E(t), what is the life expectancy of males in 2003 using E(13). Thank you!

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Question 395087: can you help? in 1990 the life expectancy was 62.3 yrs and in 1995 it was 65.8 using the linear function E(t), what is the life expectancy of males in 2003 using E(13). Thank you! Shelly
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
in 1990 the life expectancy was 62.3 yrs and in 1995 it was 65.8 using the linear function E(t), what is the life expectancy of males in 2003 using E(13).
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You have 2 points: (0,62.3) and (5,65.8)
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slope = (65.8-62.3)/(5-0) = 0.7
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Form: y = mx + b
The y-intercept is 62.3.
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Equation:
E(x) = 0.7x+62.3
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So, E(13) = 0.7(13)+62.3 = 71.4 yrs (life expect. in 2003)
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Cheers,
Stan H.
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