Which of the following individuals was responsible for introducing rational expectations into macroeconomic models?

Between 2013 and 2016, a country's nominal GDP grew by 18 percent and its inflation rate (based on the chain-weighted price index for GDP) was 11 percent. How fast did real GDP grow over this period?

What will be an ideal response?

Which of the following is a characteristic of perfect competition?

a. homogeneous products b. many sellers c. many buyers d. all of the above