Chapter 1 described how economists use marginal analysis, and Chapter 10 used marginal analysis to understand consumer behavior. This chapter introduces another specific part of marginal analysis: marginal cost (MC). Suppose that a firm is thinking of expanding production by hiring more workers, who will help the firm produce more goods. The firm’s managers calculate that the additional cost of hiring more workers is less than the additional revenue (also called marginal revenue) from selling more goods. Briefly explain whether you think the firm should expand production.