A job cost sheet of Sandoval Company is given below. Cost of completed job: Direct materials Direct labor Manufacturing overhead Total cost Unit cost (1) What are the source documents for direct materials, direct labor, and manufacturing overhead costs assigned to this job? (2) Overhead is applied on the basis of direct labor cost. What is the predetermined manufacturing overhead rate? Predetermined manufacturing overhead rate % Predetermined manufacturing overhead rate % (3) What are the total cost and the unit cost of the completed job? (Round unit cost to 2 decimal places, es Total cost of the completed job $ Unit cost of the completed job \$