To be a positive economic statement, an assertion must be true

Currently, a three-year Treasury note pays 4.75%. Assuming that your tax rate is 20%, what is the minimum interest rate that you would you need to earn on a tax-free municipal bond in order to buy it instead?

A) 0.95% B) 3.8% C) 5.7% D) 15.25%

Every society must deal with the problem of scarcity because:

a. people do not have enough money to buy everything they need. b. government levies heavy taxes on households and firms. c. human beings become satiated as consumption increases. d. human wants are nearly unlimited relative to the availability of resources. e. productive resources, technology, and labor are unlimited.