please help me answer #2 and #3

2. Use the two rates to assign the costs of the Maintenance Department to the user departments based on actual usage. Calculate the total amount charged for maintenance for the year. Round your answers to the nearest dollar. 3. What if the Assembly Department used 3,550 maintenance hours in the year? How much would have been charged out to the three department Round your answers to the nearest doliar. Assembly $ Fabricating Packaging Total $ Calculating and Using Dual Charging Rates The expected costs for the Maintenance Department of Stazler, Inc., for the coming year include: Fixed costs (salaries, tools): $72,000 per year Variable costs (supplies): $1.3 per maintenance hour The Assembly and Packaging departments expect to use maintenance hours relatively evenly throughout the year. The Fabricating Department typically uses more maintenance hours in the month of November. Estimated usage in hours for the year and for the peak month is as follows