Algebra
posted by Jerry .
In 1992, the life expectancy of males in a certain country was 69.8 years. In 1999, it was 72.6 years. Let E represent life expectancy in year t, and let t represent the numbers of years since 1992.

OK. And then what ?
You certainly cannot expect E to increase 2.8 years per 7 years (0.4 years per year) indefinitely.
Past performance is no guarantee of future results, but it might work for a year or two.
Respond to this Question
Similar Questions

algebra
In 1992 the life expectancy of males in a certain country was 63.4 years. In 1997 it was 66.7 years, let E represent the life expectancy in year t and let t represent the number of years since 1992. The linear equation that fits the … 
Algebra
In 1992 the life expectency of males in a certain counrty was 73.4 years. In 1999 it was 76.7 years. Let E represent the life expectancy in years t and let t represent the number of years since 1992. 
mathword problem
In 1992, the life expectancy of males in a certain country was 73.5 years. In 1996, it was 75.7 years. Let E representthe life expectancy in yeart and let t represent number of years since 1992. Fill in the linear function E(t) that … 
Algebra
In 1992, the life expectancy of males in a certain country was 71.4 years. In 1996 it was 73.6 years. Let E represent the life expectancy in year t and let t represent the number of years in 1992. E(t)=____t+____ Use the function to … 
algebra
in 1992, the life expectancy of males in a certain country was 67.5 years. In 1997, it was 69.9 years. let E represent the life expectancy in years t and let t represent the number os years since 1992. The linear function E(t) that … 
Math
in 1992, the life expectancy of males in a certain country was 69.8 years. in 1999, it was 72.4 years. Let E represent the life expectency in year t and let t represent the number of years since 1992. The linear function E(t) that … 
Algebra
In 1992, the life expectancy of males in a certain country was 63.8 years. In 1999, it was 66.0 years. Let E represent the life expectancy in year t and let t represent the number of years since 1992. The lineahntthe nearest ter function … 
math
In 1992, life expectancy of males in a certain country was 72.7 years. In 1999 it was 76.5 years. E represent the life expectancy in year 1 and t represent the number of years since 1992. E(t)= [ ]+ [ ] round to nearest tenth E(13)= … 
Intermediate Algebra
In 1992, the life expectancy of males in a certain country was 71.1 years. In 1997, it was 73.4 years. Let E represent the life expectancy in year t and let t represent the number of years since 1992. The linear function E(t) that … 
Intermediate Algebra
In 1992, the life expectancy of males in a certain country was 71.1 years. In 1997, it was 73.4 years. Let E represent the life expectancy in year t and let t represent the number of years since 1992. The linear function E(t) that …