Job a3b was ordered by a customer on september 25. during the month of september, jaycee corporation requisitioned $2,100 of direct materials and used $3,600 of direct labor. the job was not finished by the end of the month, but needed an additional $2,600 of direct materials and additional direct labor of $5,700 to finish the job in october. the company applies overhead at the end of each month at a rate of 200% of the direct labor cost incurred. what is the balance in the work in process account at the end of september relative to job a3b?