Farmer smith has smith 160 ft of fencing that she is using to make a rectangular enclosure for her chickens she will use the side of an existing chicken coop as one side of the enclosure and use the fencing forbthe other three sides whixh function gives the area a in swuare feet as a function of the length of one of the sides perpendicular to the existing coop a. a(x)=x(80-2x)
b. a(x)=x(80-x)
c. a(x)=x(160-2x)
d. a(x)=x(169-x)