please provide the formulas for each

i just need the formulas for each not the answers!

Exercises to review: 1,2,3,4,5,9,12,13 Computations - be able to 1. Compute a company's predetermined manufacturing overhead rate for the year. 2. Compute the amount of manufacturing overhead applied. 3. Compute the number of direct labor hours required for a job. 4. Compute total manufacturing costs for a job (both one and two departments) 5. Compute unit product cost for an individual job. 6. Compute contribution margin (2-9, part 3a). 7. Compute total manufacturing cost using capacity-based overhead rate (2-9, part 3b) 8. Compute selling price per unit after completing cost computations (2-12) 9. Compute predetermined overhead rate for two departments (2-13)