Algebra 2

In 1950 the life expectancy of women was 72 years. In 1970 it was 75 years. E represents the life expectancy and T the number of years since 1950 (t=0 gives 1950 and t=10 gives 1960).
a. fit a linear equation to predict life expectancy (0,72) AND (20,75)
The answer i got was E=3/20t=72

b. use the function to predict the life expectancy of women in 2003 and 2018.
I don't understand how i am supposed to set this and predict it.

asked by Anonymous
  1. I think you mistyped your equation.

    E(t) = 72 + 3/20 t

    See, when t=0, E = 72
    When t=20, E = 72 + 3/20 (20) = 72 + 3 = 75.

    So, now figure E(2003-1950) = E(53)
    and E(2019-1950) = E(69)

    posted by Steve

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Math

    Due to advances in medicine and higher standards of living, life expectancy has been increasing in most developed countries since the beginning of the 20th century. The table below shows the average life expectancies, in years, of
  2. Math :)

    I need to write a linear function using the following data: Year Life Expectancy In Years 1940 62.5 1950 71.1 1960 73.1 1970 74.7 1980 77.5 1990 78.8 I know the formula is y=mx+b but im not sure how to determine that from what I
  3. algebra

    In 1995, the life expectancy of males in a certain country was 73.7 years. In 2002 it was 77.5 years. Let E represent life expectancy in year t and t represents the number of years since 1995 E(t)=? t + ? E (11) =? life expectancy
  4. Algebra

    I am lost, and I bet it is simple, but I have been working with many problems and I keep coming back to this and I grow increasingly confused. How do I begin to solve this problem? In 1993 the life expectancy of males in a certain
  5. Algebra

    The life expectancies for men and women in the United States can be approximated by the following formulas: Women: E= 0.126t+76.74 Men: E=0.169t+69.11 where E represents the length of life in years and t represents the year of
  6. Math

    The U.S life expectancy of a baby born in 1960 was 69.8 years. For a birth year of 2010, the U.S life expectant was 78.5 years. Let Y be the US life expectancy for a baby born in the year x, where x=0 represents the year 1960.
  7. Algebra

    I'm a bit stuck trying to figure out what this problem wants, can anyone help? In 1991, the life expectancy of males in a certain country was 62.3 years. In 1996, it was 65.1 years. Let E represent the life expectancy in years and
  8. Statistics

    The average life of Canadian women is 73.75 years and the standard deviation of the women's life expectancy in Canada is 6.5 years. Using the Chebyshev's theorem, determine the minimum percentage of women in Canada whose life
  9. Statistics

    The average life of Canadian women is 73.75 years and the standard deviation of the women's life expectancy in Canada is 6.5 years. Using the Chebyshev's theorem, determine the minimum percentage of women in Canada whose life
  10. algebra

    in 1995 the life expectancy of males in a certain country was 67.4 years. in 2000, it was 70.9 years let E represent the life expectancy in years t and let t represent the number of years since 1995. the linear fucntion E(t) that

More Similar Questions