b ) A farm co-op has 6001 acres available to plant with corn and soybeans . Each acre of corn equires 9 gallons of fertilizer herbicide and 3 hour of labor to harvest . Each acre of 4 soybeans requires 3 gallons of fertilizer herbicide and I hour of labor to harvest . The co-op has available at most 40 , 500 gallons of fertilizer herbicide and at most 5250 hours of labor for harvesting . Using the graphical method , find the maximum profit if the profits per acre are $60 for corn and $45 for soybeans