please help and explain, confused !!

Dehner Corporation uses a job-order costing system with a single plantwide predetermined overhead rate based on direct labor-hours. The company based its predetermined overhead rate for the current year on the following data: Recently, Job P951 was completed with the following characteristics: The total job cost for Job P951 is closest to: (Round your intermediate calculations to 2 decimal places.) Mutiple Cnoice $7,040 $6.260 $4840