SOLUTION: In 1994 the life expectancy of males in a certain country was 71.8 years. In 1999, it was 73.9 years. Let E represent the life expectancy in year t and let t represent the number o

Algebra ->  Functions -> SOLUTION: In 1994 the life expectancy of males in a certain country was 71.8 years. In 1999, it was 73.9 years. Let E represent the life expectancy in year t and let t represent the number o      Log On


   



Question 286203: In 1994 the life expectancy of males in a certain country was 71.8 years. In 1999, it was 73.9 years. Let E represent the life expectancy in year t and let t represent the number of years since 1994.
The linear function E(t)that fits the data is: E(t)= ___t+___ (round to the nearest tenth)
Use the function to predict the life expectancy of males in 2004.
E(10)=____
Again, thank you kindly in advance. I've spent a good 20 minutes trying to figure out how to even SET UP this problem. :( Thank you!! :o/

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
in the five years from 1994 to 1999, the life expectancy increased 2.1 yrs (73.9 - 71.8)
___ so the SLOPE of the linear function is 2.1/5 or .42

E(t) = .42 t + 71.8

just plug in 10 for t to find the second answer