Please help with the practice question. This is the full question and no other information can be added. Two images attached. Thank you.

The following table shows the total output per hour produced in a factory for various levels of employment of labor: Number of Total Workers Output 8 18 30 41 50 55 59 61 DO'vaLJ'I-L'n-LUNA The firm sells each unit of output at $2, and each worker is paid a wage of $12. What is the marginal product of the 5th worker? Use the table from Question 5. What is the marginal revenue product of the 4th worker