Having trouble with this 3 question. Can someone explain it to me ^^

This question examines the choice of hiring workers. You will use the amount of output produced by different numbers of workers to identify the marginal product of labor and the marginal revenue product of labor. Additionally, you will identify the number of workers that a firm should hire.

Sara's Subs sells sandwiches at lunchtime. Below, you are provided with the number of sandwiches that Sara's Subs can produce with different numbers of workers.

Labor(workers)	Output (sandwiches)	Marginal Product (sandwiches)	Price (dollars per sandwich)	Marginal Revenue Product (dollars)
0	0	-----	$4	-----
1	12	12	4	576
2	21	9	4	324
3	27	6	4	144
4	30	3	4	36
5	32	2	4	16

Task 1: In the table above, identify the marginal product associated with hiring each number of workers.

Task 2: In the table above, identify the marginal revenue product associated with hiring each number of workers at a price of $4 per sandwich.

Task 3: Suppose that the price of a sandwich is $4 and the cost of hiring a worker is $24. How many workers should Sara's Subs hire? Explain your answer carefully.