Introduces students to the fundamental theoretical framework and tools used by economists to examine decision making under scarcity. Reviews mathematical economics and models. Examines consumer choice and firm supply. These two aspects of the market are brought together to examine how price and output are determined in competitive and imperfectly competitive markets. Introduces financial economics, network effects and public goods. Prerequisites: Restricted to students with 87-180 credits (Senior) or gaduate students in the College of Engineering or Leeds School of Business only.