P $2-1$: Fox Industries

Fox Industries operates a cafeteria for its employees. The operation of the cafeteria requires fixed costs of $$4,700$ per month and variable costs of $40$ percent of sales. Cafeteria sales are currently averaging $$1$ percent of the gross customer spending and avoid all cafeteria costs. How much does monthly operating income change if Fox Industries replaces the cafeteria with vending machines?

P $2-2$: Negative Opportunity Costs

Can opportunity costs be negative? Give an example.

P $2-3$: NPR