Restaurant Vendor Information Atlanta How Do Restaurant's Establish Their Menu Prices?

How do restaurant's establish their menu prices? - restaurant vendor information atlanta

How does a restaurant like Red Robin works fixed price menu or Olive Garden? What profit margin, on average, consistent with a meal? Moreover, providers, restaurant chains make such contacts with the offers of food? I try to do a project for school and do not know how you find this information or general information about the restaurant and their prices.

Thanks