Booster, Inc. recently conducted a least-squares regression analysis to predict selling expenses. The company has constructed the following regression equation: Y = 329,000 + 7.80X. Which of the following statements is false if the primary cost driver is number of units sold?

• The company anticipates $329,000 of fixed selling expenses.
• "Y" represents total selling expenses.
• The company expects both variable and fixed selling expenses.
• For each unit sold, total selling expenses will increase by $7.80.
• "X" represents the number of hours worked during the period.