Mrs. Upton owns a restaurant that produces pizza. After hiring an additional cook for the kitchen, she notices that the kitchen can produce 5 extra pizzas per hour. The 5 extra pizzas produced by the additional worker are known as what? Mrs. Upton owns a restaurant that produces pizza. After hiring an additional cook for the kitchen, she notices that the kitchen can produce 5 extra pizzas per hour. The 5 extra pizzas produced by the additional worker are known as what? marginal cost opportunity cost public good marginal benefit