Levels of costs Leopold & Olney LLP has five partners and 12 staff accountants. The partners each work 2,100 hours per year and earn $455,000 annually. The staff accountants each work 2,600 hours per year and earn $104,000 annually. The firm's total annual budget for professional support available to partners and staff accountants is $406,575. The firm also spends $162,630 for administrative support that is used only by the partners. a. Assume that total support cost is considered a unit-level cost based on number of work hours. What is the support rate per labor hour? Note: Round unit costs to two decimal places (i.e. round $4.355 to $4.36). $ b. If one audit engagement requires 60 partner hours and 220 staff accountant hours, how much professional support cost would be charged to the engagement using the rounded rate determined in (a)? $ C. Assume that support costs are considered batch-level costs based on number of work hours. What are the professional and administrative support rates per labor hour? Note: Round unit costs to two decimal places (i.e. round $4.355 to $4.36). Professional support rate per hour $ Administrative support rate per hour $ d. If an audit engagement requires 60 partner hours and 220 staff accountant hours, how much support cost would be charged to the engagement using the rates determined in (c)? Note: Use the rounded unit cost determined in part (c) in your calculations, round your final answer to the nearest whole dollar. $