9.Bolander Corporation uses a job-order costing system with a single plantwide predetermined overhead rate based on machine-hours. The company based its predetermined overhead rate for the current year on the following data: Total machine-hours 70,000 Total fixed manufacturing overhead cost $ 294,000 Variable manufacturing overhead per machine-hour $ 2.30 Recently, Job M825 was completed with the following characteristics: Number of units in the job 20 Total machine-hours 80 Direct materials $ 665 Direct labor cost $ 1,840 The predetermined overhead rate is closest to: $8.80 per machine-hour $6.50 per machine-hour $2.30 per machine-hour $4.20 per machine-hour