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 6.900 7.900 13,600 20,500 25,500 17,800 15,000 Custodial Supplies Expense $ 14,430 15,150 19,420 23,950 27,450 20,710 19,450 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.) Y=1 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 12,000 occupancy-days? Variable cost Fixed cost Total cost