Last Chance Gaming manufactures slot machines that are sold to individuals for $550 each. Foed operating costs are $742,500, and each inachine's variable cost is 70 percent of its selling price. a. What is the firm's operating breakeven point? Round your answer to the nearest dollar: b. What is the firmis degree of operating leverage at sales equal to (i) 7,000 machenes and (a) 9,000 machines? Do not round intermediate calculations. Round your answers to two decimal ploces. DOL at sales equal to 7,000 machines: DOL at sales equal to 9,000 machines