SOLUTION: I do not know how to solve this! Please someone show me step by step so I can understand!?!!??!?!??!? In 1992, life expectancy of males was 70.7 years. In 1996, it was 74.3 year

Question 584368: I do not know how to solve this! Please someone show me step by step so I can understand!?!!??!?!??!?
In 1992, life expectancy of males was 70.7 years. In 1996, it was 74.3 years. Let E represent life expectancy in year t and let t represent the number of years since 1992.
The linear function E(t) that fits the data is
E(t) = ? t + ?
Use the function to predict life expectancy in males in 2007
E(15)= ?
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
Let's say the function is
and we want to find the numbers m abd b.
For the year 1992, t=0, because it is 0 years after 1992.
So gives us
For 1996, t=4, because 1996 is 4 years after 1992, and the life expectancy of males is

That gives us the equation
--> --> -->
-->
So the function is
For 2007, . The life expectancy for males in 2007 can be predicted as
-->
RELATED QUESTIONS
Please help me solve this problem.In 1992 life expectancy of males was 64.1 years. In... (answered by MathLover1)

I do not understand how to solve f(x)=ca^x. can someone show me step by step examples of... (answered by richard1234)

I do not know how to solve these kinds of problems. Someone please explain this to me... (answered by Alan3354)

Could you please show me how to work this problem so I know how to do it. Perimeter of (answered by scott8148)

I have a problem I do not know how to work out. Could someone help me and show me step by (answered by stanbon,tara0066)

I just need to know how to do this step by step. Do not do it for me, but show me how to... (answered by ankor@dixie-net.com)

I just found this website and I hope someone can help me with a real problem, problem.... (answered by user_dude2008,RAY100)

I have a problem about factoring two variables I do not understand it. I need it worked... (answered by Alan3354)

I am really confused. I am in MM207 and do not understand how to solve this problem.... (answered by stanbon)