How might a monopolistically competitive firm continually earn economic profit greater than zero?

If a monopolist's marginal revenue is less than zero over a range of output, then price elasticity of demand must be: a. greater than one. b. equal to one

c. less than one. d. equal to zero.

To pay interest to those U.S. residents who hold government bonds, the government must tax other U.S. residents, implying that the more we redistribute income among residents to cover interest payments, the higher the average tax rate will have to be

a. True b. False