A poultry farmer keeps chickens and turkeys and he wants to sell some of his stock to raise money to buy some feeds. He wants to sell at least 5 chickens and not more than 8 turkeys. The number of turkeys he wants he wishes to sell should be equal or more than the number of chickens. A chicken costs $6 and a turkey costs $8 . Let x be the number of chickens and y the number of turkeys . Draw the graph and clearly label the lines interpreting the graph to determine the maximum income