When income is $15,000, the amount of income income taxes owed is $2,000; when income increases to $20,000, the amount owed increases to $3,000. The marginal tax rate in this case is

Which of the following names is given to the corporate bonds that carry the maximum risk?

a. Risky-time bonds b. Failure bonds c. Revelation bonds d. Blue-chip bonds e. Junk bonds

The main reason Sears Roebuck became the largest retailer in the United States during the late nineteenth century was that:

a. it reduced a host of transaction costs which allowed higher profits to shareholders and lower prices to customers. b. the railroad network improved substantially and charged higher rates for transporting goods. c. the lack of competition lowered the cost of advertising and increased profits for shareholders. d. his organization only interacted with the best wholesalers, distributors, and shippers in the business.