The Lakeshore Hotel's occupancy-days and custodial supplies expense over the last seven months were as follows: 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 "Fixed cost" to the nearest dollar amount and "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 13,600 occupancydays? (In your computations, round "Variable cost per unit" to 2 decimal places and final answers to the nearest dollar amount.)