Help with my homework??10 points?

Farmer Fred will plant corn and beans. Fred has 120 acres total he can plant. Each acre of corn requires 5 pounds of fertilizer, and each acre of bean requires 7 pounds of fertilizer. Meanwhile, each acre of corn requires 2 pound of pesticide, while each acre of beans requires 4 pounds. Each acre of corn produces $100 worth of corn, while each acre of beans produces $120 worth of beans. Fred has 660 pounds of fertilizer and 340 pounds of pesticide. What is the largest amount of revenue Fred can produce?