Please help i am so confused. kun-chan has 150 feet of fencing to make a corral for her horses. the barn will be one side of the partitioned rectangular enclosure, as shown in the diagram above. the graph illustrates the function that represents the area that could be enclosed.
a) write a function. A(x), that represents the area that can be enclosed by the corral.

b) what information does the graph provide about the function?

c) which ordered pair indicates the maximum area possible for the corral? explain what each coordinate tells about the problem.

d) what values of x will give a total area of 1000 ft^2 ? 2000 ft^2 ?