8. 9. a. How is a predetermined factory overhead rate computed? b. Name three common bases used in computing the rate. a. What is (1) overapplied factory overhead and (2) underapplied factory overhead? b. If the factory overhead account has a debit balance, was factory overhead underapplied or overapplied? c. If the factory overhead account has a credit balance at the end of the first month of the fiscal year, where will the amount of this balance be reported on the interim balance sheet? 10. Describe how a job order cost system can be used for professional service businesses