On a production possibilities frontier (PPF) with Good X on the horizontal axis and Good Y on the vertical axis, we can say that the slope of the PPF (in absolute value) equals the opportunity cost of producing Good X with respect to the production of Good Y. This is true because the slope:

Advertisers are usually very conscious of their audience. choose an issue of a popular magazine such as time, sports illustrated, vanity fair, rolling stone, or the like. from that issue select three advertisements to analyze. try to determine the audience being appealed to in each advertisement and analyze the appeals used to persuade buyers. how might the appeals differ is the ads were designed to persuade a different audience.

To travelers know what to expect researchers collect the prices of commodities

Who would be most critical of these statements about free trade agreements?