Packaging Solutions Corporation manufactures and sells a wide variety of packaging products. Performance reports are prepared monthly for each department. The planning budget and flexible budget for the Production Department are based on the following formulas, where q is the number of labor-hours worked in a month: The Production Department planned to work 8,000 labor-hours in March; however, it actually worked 8,400 labor-hours during the month. Its actual costs incurred in March are listed below: Required: 1. Prepare the Production Department's planning budget for the month. 2. Prepare the Production Department's flexible budget for the month. 3. Calculate the spending variances for all expense items