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 y = = - $0+ $4x $0 + $13x $10,300 + $1x 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 528, 589, and 677 direct labor hours. (List variable costs before fixed costs.) RENSING GROOMERS Flexible Budget