economic profits and accounting profits

What is the basic economic problem that all persons, businesses and countries face? What are the differences in the way a market process vs. a command process attempt to deal with the basic economic problem? What is the difference between Economic Profits and Accounting Profits? Discuss the importance of taking into account the opportunity costs (implicit costs) in investment decisions. Illustrate you discussion with examples.

700 words. APA format. References must be scholarly/academic journals and no earlier than 2010