[Solved] Find a grammar for the set \(\left\{ 0 ^ { 2 n } 1 ^ { n } \mid n \geq 0 \right\}\) Variable Cost: A cost that changes in proportion to the level of activity or volume of output in production or business operations. Delivery Cost: The expense incurred in transporting goods from one location to another, often considered in product pricing and logistics planning. Sales Forecasts: Predictions of the sales that a company expects to achieve in a certain period, based on market research, trend analysis, and historical sales data. Customer Service Personnel: Employees tasked with assisting customers by addressing inquiries, solving problems, and providing information about products or services.