Sarasota Company uses flexible budgets to control its selling expenses. Monthly sales are expected to range from $183,600 to $216,000. Variable costs and their percentage relationship to sales are sales commissions 6%, advertising 4%, travel 3%, and delivery 2%. Fixed selling expenses will consist of sales salaries $37,800, depreciation on delivery equipment $7,560, and insurance on delivery equipment $1,080. Prepare a monthly selling expense flexible budget for each $10,800 increment of sales within the relevant range for the year ending