Wednesday

April 16, 2014

April 16, 2014

Posted by **i love polka** on Thursday, November 6, 2008 at 10:52pm.

If this trend continues, for which birth year will the average life expectancy be 85 years?

how do u write and equation for to solve this?

- Math -
**drwls**, Friday, November 7, 2008 at 6:07amLet life expenctancy = L . Let y be the number of years after 1900.

L = 55 + 0.2 y = 85

Solve that equation for y

0.2 y = 30

y = 150

That would make the birth year 2050 for a life expectancy of 85.

**Related Questions**

Algebra - The life expectancies for men and women in the United States can be ...

math,algebra - Can someone help me set this up to solve or what should i do ...

algebra - In 1995, the life expectancy of males in a certain country was 73.7 ...

math - In 1990, the life expectancy of males in a certain country was 62.1 years...

math - In 1990, the life expectancy of males in a certain country was 62.1 years...

math - in 1994 the life expectancy of malews in a certain country was 70.9 years...

math - in 1990 the life expectancy of males in a certain country was 64.7 years...

algebra - In 1990, the life expectancy of males in a certain country was 62.1 ...

Algebra - In 1992, the life expectancy of males in a certain country was 71.4 ...

algebra - In 1990, the life expectancy of males in a certain country was 62.1 ...