SOLUTION: In 1991, the life expectancy of males in a certain country was 66.1 years. In 1998, it was 68.5 years. Let E represent the life expectancy in year t and let t represent the number
Algebra.Com
Question 424831: In 1991, the life expectancy of males in a certain country was 66.1 years. In 1998, it was 68.5 years. Let E represent the life expectancy in year t and let t represent the number of years since 1991. the linear functin E (t) that fits the dat is:
E (t) = __t +___.
(round to the nearest tenth)
Use the function to predict the life expectanc of males in 2008.
E (17) = ____
(round to the nearest tenth)
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In 1991, the life expectancy of males in a certain country was 66.1 years. In 1998, it was 68.5 years. Let E represent the life expectancy in year t and let t represent the number of years since 1991.
---
2 points: (0,66.1), (7,68.5)
---
slope = (68.5-66.1)/7 = 12/35
int: 66.1
------------------------------------
the linear function E (t) that fits the date is:
E (t) = (12/35)t +66.1
(round to the nearest tenth)
----------------------------------------------
Use the function to predict the life expectanc of males in 2008.
E (17) = (12/35)17+66.1 = 71.93
(round to the nearest tenth)
===================================
Cheers,
Stan H.
=======
RELATED QUESTIONS
Please help.
In 1991, the life expectancy of males in a certain country was 70.3 years.... (answered by Mathtut)
Here's a hard one...HELP
In 1991, th elife expectancy of males in a certain country... (answered by stanbon)
In 1992, the life expectancy of males in a certain country was 71.6 years. In 1998, it... (answered by jim_thompson5910)
In 1994, the life expectancy of males in a certain country was 69.6 years. In 1998, it... (answered by ankor@dixie-net.com)
In 1991, the life expectancy of males in a certain country was 61.5 years. In 1995, it... (answered by josmiceli)
In 1992, the life expectancy of males in a certain country was 66.4 years. In 1996, it... (answered by stanbon)
In 1995, the life expectancy of males in a certain country was 72.3 years. In 2001, 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)