A farmer creates a rectangular pen using part of the wall of a barn for one side of the pen and a total of 130 feet of fencing f
or the remaining 3 sides, as shown in the diagram. Write and equation which gives the area of the pen, A, as a function of x, the length of fence parallel to the barn
D1 = 60 for a price of $80. Charging $80 will ensure supply exceeds demand. ___ The store apparently could charge a price slightly lower than $80, but we cannot tell from the chart how much lower.