While studying the relationship between advertising and sales growth, a researcher determines that the relationship is sometimes weak and at other times moderate. this variation from one situation to another is the variation in the of the relationship between advertising and sales growth.

Brazil trades with the united states more than it does with any other country. industrially, the private sector has made brazil one of the most advanced countries in latin america, with massive investment taking place since 1996. still, over 1 million people live in state-owned housing and millions more are covered by government operated health care. these facts show that brazil has a a) mixed economy. b) market economy. c) command economy. d) traditional economy.