need help answering this accounting question

Don Lieberman and Associates, a CPA firm, uses job order costing to capture the costs of its audit jobs. There were no audit jobs in process at the beginning of November. Listed below are data concerning the three audit jobs conducted during November. Direct materials Auditor labor costs Auditor hours Marigold Inc. $710 $5,600 78 Concord Inc. $500 $6,700 Swifty Inc. $210 $4,275 49 91 Overhead costs are applied to jobs on the basis of auditor hours, and the predetermined overhead rate is $52 per auditor hour. The Marigold job is the only incomplete job at the end of November. Actual overhead for the month was $13,600. (a) Determine the cost of each job. Cost Marigold $ Concord $ Swifty $ (b) Indicate the balance of the Service Contracts in Process account at the end of November. Balance in service contracts in process account (c) Calculate the ending balance of the Operating Overhead account for November. Balance in operating overhead account $ Dr