I am trying to figure out this problem :)
A field is to be marked off in the shape of a rectangle of area 144 square feet.
a. Write an expression for the perimeter, P, as a function of the length x
for this, so far i know that the perimeter is 2l + 2w so how would i set this up?
b. Use a calculator to approximate the dimensions for which the perimeter is a minimum ( I don't understand what this means)
thanks for helping! ;D