<PRE><B>Question 395087</B>
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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