International equilibrium occurs if the quantity of imports demanded by one country is equal to the quantity of exports supplied by the other country

Data on miles of main line track in operation between 1860 and 1910 show that:

a. total mileage first increased and then decreased, causing the growth rate to eventually become negative. b. total mileage and the growth rate both increased steadily. c. total mileage increased steadily, but the growth rate tapered off. d. total mileage increased at a constant pace, resulting in a nearly constant growth rate.

In the "Prisoners' Dilemma" game: a. When the prisoners follow their dominant strategy and confess, both will be worse off than if each had remained silent. b. a player would be better off if he did not confess and the other player confessed

c. a player would be better off if both he and the other player confessed. d. None of the above is true.