A rectangular field is to be enclosed by 200 feet of fence One side of the field is a building so fencing is not required on that side Area as a function of x 5000 x Fenced Area Domain of area function 1 5000 Building If x denotes the length of one side of the rectangle perpendicular to the building determine the function in the variable x giving the area in square feet of the fenced in region X Determine the domain of the area function Enter your answer using interval notation I