A courier working for a private delivery service operates on weekends, focusing on delivering urgent documents and parcels. the courier manages to deliver 15 items per hour. the fixed hourly expenses, including vehicle maintenance and insurance, amount to $42. additionally, the variable costs, which cover overtime wages and related expenses, are $0.50 for each item delivered. calculate the minimum amount the delivery service must charge per item to achieve a break-even point for these weekend deliveries.