(a) Determine the fixed-and variable-cost components using the high-low method. (b) Prepare a graph showing the behavior of maintenance costs, and identify the fixed-and variable-cost elements. Use 100-hour increments and exist1,000 cost increments. Family Furniture Corporation incurred the following costs. Wood used in the production of furniture. Fuel used in delivery trucks. Straight-line depreciation on factory building. Screws used in the production of furniture. Sales staff salaries. Sales commissions. Property taxes. Insurance on buildings. Hourly wages of furniture craftsmen. Salaries of factory supervisors. Utilities expense. Telephone bill. (a) Determine the fixed-and variable-cost components using the high-low method. (b) Prepare a graph showing the behavior of maintenance costs, and identify the fixed-and variable-cost elements. Use 100-hour increments and exist1,000 cost increments. Family Furniture Corporation incurred the following costs. Wood used in the production of furniture. Fuel used in delivery trucks. Straight-line depreciation on factory building. Screws used in the production of furniture. Sales staff salaries. Sales commissions. Property taxes. Insurance on buildings. Hourly wages of furniture craftsmen. Salaries of factory supervisors. Utilities expense. Telephone bill