The Lakeshore Hotel's occupancy-days and custodial supplies expense over the last seven months were as follows: Month March April May June July August September Occupancy Days 10,500 10,700 12,400 20,500 29,100 20,200 16,200 Custodial Supplies Expense $ 20,200 20,320 21,640 26,200 31,360 24,670 22,970 Occupancy days are a measure of the overall activity at the hotel. For example, when a guest stays at the hotel for three days, it is counted as three occupancy-days. Required: 1. Using the high-low method, estimate a cost formula for custodial supplies expense. (Round the "Variable cost" to 2 decimal places.) 2. Using the cost formula you derived above, what amount of custodial supplies expense would you expect to be incurred at an occupancy level of 15,400 occupancy days? Variable cost Fixed cost Total cost S