Algebra 2
posted by Anonymous
In 1950 the life expectancy of women was 72 years. In 1970 it was 75 years. E represents the life expectancy and T the number of years since 1950 (t=0 gives 1950 and t=10 gives 1960).
a. fit a linear equation to predict life expectancy (0,72) AND (20,75)
The answer i got was E=3/20t=72
b. use the function to predict the life expectancy of women in 2003 and 2018.
I don't understand how i am supposed to set this and predict it.

Steve
I think you mistyped your equation.
E(t) = 72 + 3/20 t
See, when t=0, E = 72
When t=20, E = 72 + 3/20 (20) = 72 + 3 = 75.
So, now figure E(20031950) = E(53)
and E(20191950) = E(69)
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