1. a freelancer's pay may vary from year to year. a. true b. false 2. how many years after the debut did it take for the number of users to quadruple? a. 1 years b. 2 years c. 3 years d. 4 years 3. a document that tracks a company's income and expenses is referred to as a. an income sheet. b. a balance sheet. c. a purchase order. d. a budget. 4. the internet has created a new market for companies. a. true b. false