Sheffield Possible Inc. (SP) is a manufacturer of toaster ovens. To improve control over operations, the president of SP wants to begin using a flexible budgeting system, rather than using only the current master budget. The following data are available for SP's expected costs at production levels of 99,000, 110,000, and 121,000 units. Variable costs Manufacturing $5 per unit Administrative $3 per unit Selling $3 per unit Fixed costs Manufacturing $176,000 Administrative $88,000