Rensing Groomers is in the dog-grooming business. Its operating costs are described by the following formulas: Grooming supplies (variable) Direct labor (variable) Overhead (mixed) y = $0 + $4x y = $0 +$14x y = $10,300+ $2x Milo, the owner, has determined that direct labor is the cost driver for all three categories of costs. (a) Prepare a flexible budget for activity levels of 530, 560, and 680 direct labor hours. (List variable costs before fixed costs.) Flexible Budget $ $ $ $ +A Activity Level Direct Labor Direct Labor Hours Fixed Costs Grooming Supplies Overhead Total Costs Total Fixed Costs Total Variable Costs Variable Costs