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 t represent the number of years since 1991.
a. The linear function E(2) that fits the data is
E(t)=___t + ___ (round to the nearest tenth).
b. Use the function to predict the life expectancy of males in 2007. E(18)=____.

  1. 👍 0
  2. 👎 0
  3. 👁 75
asked by Gayle
  1. The slope is deltaE/deltaTime=2.8/5

    E=2.8/5 * t + 62.3
    where t is in years greater than 1991

  2. Thank you, I finally got the answer I needed after playing around with the original figures before writing the actual equation. I got E(t)=.56t+62.3 for the equation and E(18)=.56(18)+62.3=72.38 or 72.4....sound about right?

    1. 👍 0
    2. 👎 0
    posted by Gayle

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    I'm stuck on this 1 math problem. I've tried many ways to figure it out, but I can't. The problem is; 2(3x-5)>2x+6.

    asked by Janelle on February 14, 2008
  2. ALGEBRA

    i AM STUCK TRYING TO FIGURE THIS PROBLEM. SUMMATION NOTATION. 5 OVER A SIDEWAYS Z AT THE BOTTOM THERE IS N=2 AND ON THE SIDE THERE IS (5N+3) I came up with the answer 85

    asked by MELISSA on April 19, 2009
  3. Chemistry

    I've been working on this problem for hours and cant figure it out. I know it should be simple, but I'm stuck... The question is... Describe how to prepare 1.00L of a 1.0% (w/v) NaOH from a 2.0 M NaOH. *I need to figure out how

    asked by James on January 10, 2013
  4. Data communication and Networking

    1. Illustrate the wave forms for data “101001000111010011110100” by using the following modulation techniques: a. 2 bit AM + 1 bit PM b. 2 bit FM + 1 bit AM c. 2 bit PM + 1 bit FM 2. Based on 8 bit ASCII code, illustrate a

    asked by Mohamed on January 18, 2019
  5. algebra

    How do I state which property of exponents justifies each step of this simplification?: 3^2x^6z^10/2^2y^18*x^4y^4z^4/5z^3*27z^6/2^2x^2y^3 Im really stuck on this problem, I've managed to figure out the first 5 problems but this

    asked by Maggie on April 9, 2015
  6. college-- chemistry

    I got stuck on this problem and I cannot figure out what to do or explain this problem. Please help me with this problem. The emission lines of one-electron atoms and ions can all be fit to the equation describing the spectrum of

    asked by shylo on February 16, 2009
  7. chemistry

    I cannot figure out how to work this stoichiometry problem with the given equation: Mg+2HCl-->MgCl2+H2 What volume of hydrogen is produced from the reaction of 50.0g of Mg and the equivalent of 75g of HCl What do you not

    asked by Carter on February 5, 2007
  8. physics as

    the figure below shows the graph of force,F (y axis)acting on a trolley of 0.4kg against time,t (x axis) 20--------- ........._-- ........._...-- ........._....--- ........._......--- ........._.......----- 0........5............9

    asked by cylinder on January 8, 2018
  9. Physics

    35 of copper pellets are removed from a 300 oven and immediately dropped into 120 of water at 20 in an insulated cup.What will the new water temperature be? I'm stuck on this problem and could use some help. I used q pellets = m

    asked by Liz on April 5, 2011
  10. log

    please help given that 4^(2x+1) X 7^(x-1) = 8^x X 14^2x evaluate 14^x this is what i did, but i got stuck anyways. 2^(4x+2) X 7^(x-1) = 2^3x X 14^2x 2^(x+2) = 2^2x X 7^(x+1) sorry this might be a bit confusing, but the big letter

    asked by log on July 2, 2009

More Similar Questions