You are planning the menu for your restaurant. Each evening you offer two different meals and have at least 240 customers. For Saturday night you plan to offer roast beef and teriyaki chicken. The beef costs you $5 per serving and the chicken costs you $3 per serving. You have a budget of at most $1200 for meat for Saturday night. Write a system of linear inequalities that shows the various numbers of roast beef and teriyaki chicken meals you could make for Saturday night. Let x represent the beef dinners and y represent the chicken dinners.