Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business executive. He is a professor of economics and has raised more than $4.5 billion in ...

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Robert Kelly is managing director of XTS Energy LLC, and has more than three ...

William Baumol writes in "Economics: Principles and Policy" that the total monetary utility of a collection of goods to a consumer is equal to the largest amount of money the consumer will pay in ...