This document provides an overview of business organization and management concepts including monopoly, demand curve, revenue, and the differences between perfect and imperfect competition. It defines monopoly as a market with a single seller and no close substitutes. The demand curve under monopoly slopes downward, indicating an inverse relationship between price and quantity sold. It then defines and provides formulas for total revenue, average revenue, and marginal revenue. Under imperfect competition, marginal revenue falls faster than average revenue as output increases. In perfect competition, average revenue and marginal revenue are equal and demand is perfectly elastic.