Anton wants to plant a small orchard of apple trees and cherry trees in his back yard. He has a budget of $1,000, and his plot has a maximum of 100 square feet. The apple trees he wants cost $40 each and require 5 square feet. The cherry trees he wants cost $50 each and require 4 square feet. The following first-quadrant graph shows the system of inequalities that represents the situation, {5x+4y≤10040x+50y≤1000, with the number of apple trees along the x-axis and the number of cherry trees along the y-axis.