Prior to 1921, federal agencies first submitted their budgetary requests to _____

In evaluating a relationship between x and y, ceteris paribus means other variables

A) are not relevant to x and y. B) move in opposite directions to x and y. C) are not changing while x and y change. D) move in the same direction as x and y.

The gravity model suggests that over time

A) trade between neighboring countries will increase. B) trade between all countries will increase. C) world trade will eventually be swallowed by a black hole. D) trade between Earth and other planets will become important. E) the value of trade between two countries will be proportional to the product of the two countries' GDP.