Cost behavior refers to the way a total cost changes as a related activity changes. Understanding cost behavior is an important element of managerial decision-making because it helps management predict profitability as the costs of materials, labor, and other operating expenses and levels of production change. The three most common classifications of cost behavior are fixed costs, variable costs, and mixed costs. Mixed costs are costs that bear characteristics of both fixed and variable costs. In the following table, Sofas Direct has outlined some of the costs associated with producing sofas. With respect to the production and sale of sofas, classify each cost as fixed, mixed, or variable