On average, about ___% of travelers get some form of expedited screening, including instances like less-intrusive scanning of elderly travelers in non-PreCheck lanes.

Assume sticky prices and given expectations of future exchange rates, what is the immediate effect on the exchange rate of the U.S. dollar if there is a temporary increase in the quantity of U.S. dollars?

a. U.S. nominal and real returns rates decline while euro rates hold steady, and the U.S. dollar depreciates against the euro. b. U.S. nominal returns rise, U.S. real returns fall, euro rates rise, and the U.S. dollar appreciates against the euro. c. U.S. nominal returns fall, U.S. real returns rise, euro rates fall, and the U.S. dollar appreciates against the euro. d. U.S. dollar returns and euro returns both rise, leaving the exchange rate unchanged.

The short run is a period of time in which

A) the quantity of at least one factor of production is fixed. B) the amount of output is fixed. C) prices and wages are fixed. D) nothing the firm does can be altered.