E5-9 The Green Acres Inn is trying to determine its break-even point. The inn has 50 rooms that it rents at $60 a night. Operating costs are as follows. Instructions Salaries Utilities Depreciation Maintenance Maid service Other costs $6,200 per month $1,100 per month $1,000 per month $100 per month $11 per room $28 per room Determine the inn's break-even point in (a) number of rented rooms per month and (b) dollars