Great Bay Company manufactures cordless telephones. During 2022, total costs associated with manufacturing 18,500 of the AB- 2000 model (introduced this year) were as follows: Raw materials $ 195 , 175 Direct labor 115,625 Variable manufacturing overhead 85, 100 Fixed manufacturing overhead 114 , 700 Required: 3. Calculate the cost per phone under both direct (or variable) costing and absorption costing. b. If 2,800 of these phones were in finished goods inventory at the end of 2022, by how much and in what direction (higher or lower) would 2022 operating income be different under direct (or variable) costing than under absorption costing? c. Express the phone cost in a cost formula. What does this formula suggest the total cost of making an additional 1,600 phones would be? Complete this question by entering your answers in the tabs below. Required A Required B Required C Express the phone cost in a cost formula. What does this formula suggest the total cost of making an additional 1,600 phones would be? (Round your total cost formula answer to 2 decimal places.) Total cost formula = - per phone produced. Total additional cost