Results 1 to 2 of 2

Math Help - Another Algebra II Question

  1. #1
    Junior Member
    Joined
    Jul 2008
    Posts
    38

    Another Algebra II Question

    So, you have this....
    -470001t(squared)+4110992t+14032612/-469.4t(squared)+3745t+19774 (sorry don't know how to square them)

    and then it asks..Find the year in which the average benefit was $800.00

    In order to graph this on my calculator i have to put certain numbers in the "Window" button, and i just can't figure out what numbers to put in...


    -Thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Forum Admin topsquark's Avatar
    Joined
    Jan 2006
    From
    Wellsville, NY
    Posts
    9,888
    Thanks
    326
    Awards
    1
    Quote Originally Posted by ep78 View Post
    So, you have this....
    -470001t(squared)+4110992t+14032612/-469.4t(squared)+3745t+19774 (sorry don't know how to square them)

    and then it asks..Find the year in which the average benefit was $800.00

    In order to graph this on my calculator i have to put certain numbers in the "Window" button, and i just can't figure out what numbers to put in...


    -Thanks
    Ummm.... I presume the formula you gave is for the average benefit? If so then you are looking for x values such that the y values are close to 800. What I'd do is a search. You know that the year, x, is positive, so set the x part of the window to something like 0 to 100. Set the y to 700 to 900. If the function does not show up in this box, use 100 to 200 for x in the next window, etc. When the function shows up in the window you can zoom in on this a bit by estimating the correct range of values for x and y from where the function is in the window.

    That or you can graph the function
    \frac{-470001t^2+4110992t+14032612}{-469.4t^2+3745t+19774} - 800
    and have the calculator search for the zeros. That will give you a good idea how to set your graphing window.

    By the way, please use parenthesis. The expression you wrote is
    -470001t^2+4110992t+ \frac{14032612}{-469.4t^2}+3745t+19774
    not the similar expression I wrote above.

    -Dan
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] Question on algebra
    Posted in the Algebra Forum
    Replies: 5
    Last Post: February 12th 2011, 06:46 AM
  2. [SOLVED] Algebra Question
    Posted in the Algebra Forum
    Replies: 4
    Last Post: September 13th 2010, 09:36 PM
  3. algebra 2 question
    Posted in the Algebra Forum
    Replies: 4
    Last Post: September 8th 2009, 07:20 PM
  4. Another Algebra Question
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: July 23rd 2008, 08:31 AM
  5. Help with a pre-algebra question
    Posted in the Algebra Forum
    Replies: 10
    Last Post: October 14th 2007, 12:18 AM

Search Tags


/mathhelpforum @mathhelpforum