Algebra
posted by Angie on .
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.

120 equals x + two ends=x+(120x) so each end is (120x)/2
area is then A=x(120x)/2 
So would the answer be
A(x) = 60x – x^2?
Or
A(x) = 120x – x2 
I get 60xx^2/2

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

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

deez nuts