In which market structure is there clear interdependence between individual firms with regard to prices and sales?
a. pure competition

The Bureau of Labor Statistics defines a person as unemployed if he or she does not:

a. work full time. b. have a job but is actively seeking one. c. earn a wage above the minimum wage rate. d. earn enough income to be above the poverty level. e. work as much as he or she desires.

Since 2000, what income group of countries has grown the fastest?

a. high income b. low income c. middle income d. Middle and low income groups grew at the same fastest rate.