Rensing Groomers is in the dog-grooming business. Its operating costs are described by the following formulas:

Grooming supplies (variable)y=$0 + $4x

Direct labor (variable)y=$0 + $13x

Overhead (mixed)y=$9,600 + $1x

Milo, the owner, has determined that direct labor is the cost driver for all three categories of costs.

Please help me make a flexible budget for activity levels of 550, 600, and 680 direct labor hours. (List variable costs before fixed costs.)