Exercises 1 Total the expenses for airfare, hotel stays, and rental cars separately. 2 Total the expenses for all British Airway flights. 3 Total food-related expenses. How much money did the company spend on restaurants, fast-food restaurants, and catering, both separately and together? 4 Use MATCH() to find transactions billed to internal departments. Internal departments have customer numbers that begin with zero. 5 Determine what percentage of the total transaction amounts is billed to internal departments, and what percentage is billed to external clients. Exercises 1 Total the expenses for airfare, hotel stays, and rental cars separately. 2 Total the expenses for all British Airway flights. 3 Total food-related expenses. How much money did the company spend on restaurants, fast-food restaurants, and catering, both separately and together? 4 Use MATCH() to find transactions billed to internal departments. Internal departments have customer numbers that begin with zero. 5 Determine what percentage of the total transaction amounts is billed to internal departments, and what percentage is billed to external clients