Wave Runners is a boat rental business that has the following costs over the relevant range of 18,000 to 24,000 operating hours for its boats: Required: 1. Complete the schedule of the company's total and unit costs. (Round "Cost per hour" answers to 2 decimal places.) 2. Assume that Wave Runners rents it boats for $17 per hour and had 21,000 hours of rentals last year. Prepare a contribution format income statement for the year