Justin wants to fence three sides of a rectangle exercise yard for his dog. the fourth side of the exercise yard will be a side of the house. he has 56 feet of fencing available. find the dimensions that will maximize the area of the exercise yard. side opposite the house is feet long other two sides are both feet long

Jack has a rectangular piece of land, the area of which is represented by a1 = 9.5l. his brother has a different rectangular piece of land, the area of which is represented by a2 = l(14 − l). let a represent the area in square meters and l represent the length in meters of the pieces of land. the two equations plotted on a graph meet at a point as shown in the image