Concord Corporation has several outdated computers that cost a total of $18000 and could be sold as scrap for $6000. They could be updated for an additional $2900 and sold. If Concord updates the computers and sells them, net income will increase by $9000. What amount would be considered sunk costs?

You are a newspaper publisher. you are in the middle of a one-year rental contract for your factory that requires you to pay $500,000 per month, and you have contractual labor obligations of $1 million per month that you can't get out of. you also have a marginal printing cost of $.25 per paper as well as a marginal delivery cost of $.10 per paper. if sales fall by 20 percent from 1 million papers per month to 800,000 papers per month, what happens to the afc per paper?