From price and quantity to socially optimal prices and maximizing total revenue, see the needs for a monopoly charted on a graph. 

How do consumers and producers both pay part of an excise tax, and how does the tax shift prices and quantity? This economics teacher demonstrates how to use a graph in order to answer these questions, as well as how to calculate tax per...

Showing that what is optimal for the monopolist is not optimal for society.

Tax incidence is a description of how the burden of a tax falls in a market. In this video, Sal Khan breaks down how to identify consumer surplus, producer surplus, tax revenue and tax incidence, and dead weight loss after a tax. [5:46]