What is the best definition of marginal revenue? the possible income from producing an additional item the price of producing one additional unit of a good the additional income gained from selling an additional good the financial gain from business activity minus expenses

Marginal revenue is the change in total revenue resulting from producing one more unit of output - one more unit of a good or service. Marginal revenue is calculated by figuring out the difference between total revenues produced, before the additional unit of output and after you increase production by one unit.