<PRE><B>Question 530474</B>
In 1993, the life expectancy of males in a certain country was 61.9 years.
Let x = 0 represent 1993.
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In 2000, it was 65.6 years. Let E represent the life expectancy in year t and let t represent the number of years since 1994.
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You have 2 points: (0,61.9), (7,65.6)
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slope = (65.6-61.9)/(7-0) = 0.5286
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E-intercept is E(0) = 61.9
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E(t)= 0.53t+61.9_ (round to the nearest tenth
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Use the function to predict the life expectancy in 2005
E(12)= 0.53*12+61.9 = 68.26
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Cheers,
Stan H.
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