SOLUTION: In 1995 the life expectancy of males in a certain country was 64.7 years. In 2000, it was 68.0 years. Let E represent the life expectancy in year t and let t represent the number o

Question 366492: In 1995 the life expectancy of males in a certain country was 64.7 years. In 2000, it was 68.0 years. Let E represent the life expectancy in year t and let t represent the number of years since 1995.
The linear function E(t) that fits the data is
E(t)=
Use the function to predict the life expectancy of males in 2003.
E(8)=

Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi, 

Applying the slope-intercept format(y= mx + b) for a linear equation.



m = (68-64.7) / (2000-1995) = (3.3/5)

68 = (3.3/5)*5 + b

68 - 3.3 =  b

64.7 = b

linear ecpression is:

E = (3.3/5)t + 64.7  where t is the number of years since 1995.

In the year 2003 (8 years from 1995)

E(8)= (3.3/5)*8 + 64.7

E(8) = 5.28 + 64.7

E(8) = 69.98

 

RELATED QUESTIONS

In 1995, the life expectancy of males in a certain country was 72.3 years.  In 2001, it... (answered by stanbon)
In 1995, the life expectancy of males in a certain country was 66.9 years. In 2002, it... (answered by stanbon)
In 1995, the life expectancy of males in a certain country was 73.8 years. In 2001, it... (answered by stanbon)
Can you help me figure out how to do this?

In 1995, the life expectancy of males in a... (answered by mananth)
In 1992, the life expectancy of males in a certain country was 66.4 years. In 1996, it... (answered by stanbon)
in 1992 the life expectancy of males in a certain country was 72.1 years. In 1997 it was... (answered by ankor@dixie-net.com)
In 1992 the life expectancy of males in a certain country was 66.2 years in 1997 it was... (answered by drk)
In 1993, the life expectancy of males in a certain country was 61.9 years. In 2000, it... (answered by stanbon)
In 1991, the life expectancy of males in a certain country was 61.5 years.  In 1995, it... (answered by josmiceli)