Algebra

Suppose a farmer has 120 feet of fencing to make a rectangular barnyard enclosure. If the enclosure is x feet long, express the area A of the enclosure as a function of the length x.

asked by Angie
  1. 120 equals x + two ends=x+(120-x) so each end is (120-x)/2

    area is then A=x(120-x)/2

    posted by bobpursley
  2. So would the answer be

    A(x) = 60x – x^2?

    Or

    A(x) = 120x – x2

    posted by Angie
  3. I get 60x-x^2/2

    posted by bobpursley
  4. Thanks that is what I got to, so therefore A(x) = 60x – x^2 is the answer! Thanks for your help! :-)

    posted by Angie
  5. A PIECE OF TIN IS TWICE AS LONG AS IT IS WIDE. IT IS TO BE MADE INTO A BOX BY CUTTING 2 INCH SQUARES FROM EACH CORNER AND FOLDING UP THE SIDES . FIND THE DIMENSIONS OF THE PIECE OF TIN IF THE VOLUME OF THE BOX IS 320 CUBIC INCHES

    posted by JJ
  6. deez nuts

    posted by lebron

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