Williams Performance Co. manufacturws sports cars. After making a sale, the salesperson sends the car to be detailed before the customer takes it home. Detailing the car takes 30 minutes at a cost of $16 per hour for direct labor and $7 per car for materials. If the average salesperson sells three cars per day, what is the average cost per 5 day week for detailing cars( Do not round intermediate calculations. Round your final answer to 2 decimal places)