1. A business is an organization that offers goods and services in exchange for money. Businesses have key functions like production, marketing, financing, managing human resources, and research and development. 2. There are three main categories of businesses: sole proprietorships, partnerships, and limited companies. A sole proprietorship is owned and run by one person who has unlimited liability. Partnerships are owned and managed by two or more people who share profits and responsibilities. 3. A partnership agreement jointly shares decision making. Partners have unlimited liability and must share profits. While partnerships have more access to financing than sole proprietorships, they also have to share profits.