SOLUTION: in 1994, the life expectancy of males in a certain country was 62.6 years. In 2001, it was 65.2 years. Let E represent the life expectancy in year t and let t represent the numbe

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: in 1994, the life expectancy of males in a certain country was 62.6 years. In 2001, it was 65.2 years. Let E represent the life expectancy in year t and let t represent the numbe      Log On


   

Question 347682: in 1994, the life expectancy of males in a certain country was 62.6 years. In 2001, it was 65.2 years. Let E represent the life expectancy in year t and let t represent the number of years since 1994. Could someone help me solve this question by step by step? Thank you!!!
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
There must be a little more information. Is this problem
part of exercises on linear equations? If so,
given:
Let t represent the number of years since 1994.
t%5B1%5D+=+0 (1994)
t%5B2%5D+=+7 (2001)
E%5B1%5D+=+62.6
E%5B2%5D+=+65.2
Assuming this is a linear relation between E and t,
The formula to use is:

plugging in data:
%28E+-+62.6%29+%2F+%28t+-+0%29+=+%2865.2+-+62.6%29+%2F+%287+-+0%29
%28E+-+62.6%29+%2F+t+=+2.6+%2F+7
%28E+-+62.6%29+%2F+t+=+.3714
E+-+62.6+=+.3714t
E+=+.3714t+%2B+62.6
With this equation, you can find E for any t