In 1995, life expectancy of males in a certain country was 68.9 years. In 2000, it was 72.8 years. Let E represent the life expectancy in year t represent the number of years since 1995.

The linear function E(t) that fits the data is
E(t)=?t+?
(rounded to the nearest tenth)

Use the function to predict life expectancy of males in 2008?

E(13)=?
(rounded to the nearest tenth)

Question

In 1995, life expectancy of males in a certain country was 68.9 years. In 2000, it was 72.8 years. Let E represent the life expectancy in year t represent the number of years since 1995.

The linear function E(t) that fits the data is
E(t)=?t+?
(rounded to the nearest tenth)

Use the function to predict life expectancy of males in 2008?

E(13)=?
(rounded to the nearest tenth)

saifoo.khan · Answer

C'mon!! :/

anonymous · Answer

i think E(t)=68.9t+72.8

saifoo.khan · Answer

You are correct.

anonymous · Answer

but the thing i get stuck on is the rounding to the nearest tenth

anonymous · Answer

so that should read like so 
70t+73

saifoo.khan · Answer

The best part it, i hate this problem.. speically it's rounding off part. LOL.

anonymous · Answer

yes but this one had me stuck but the part with the nearest tenth not so bad

anonymous · Answer

what do you think does that look good

saifoo.khan · Answer

No, when i got it wrong, it gave me a similar answer.

saifoo.khan · Answer

you can skip this.. do this one in the end.

anonymous · Answer

ok

saifoo.khan · Answer

Yay! :D