Why is this incorrect? also answer part b to the same question.

Required information Cost Classifications (Algo) [The following information applies to the questions displayed below.] When Kubin Company produces and sells 31,000 units, its average costs per unit are as follows: Exercise 1-8 (Algo) Product Costs and Period Costs; Variable and Fixed Costs [LO1-3, LO1-4] Required: 1. What is the total amount of product costs incurred to make 31,000 units? 2. What is the total amount of period costs incurred to sell 31,000 units? 3. What is the total amount of product costs incurred to make 33,000 units? 4. What is the total amount of period costs incurred to sell 29,000 units? (For all requirements, do not round intermediate calculations.) Required information Cost Classifications (Algo) [The following information applies to the questions displayed below.] When Kubin Company produces and sells 31,000 units, its average costs per unit are as follows: Exercise 1-9 (Algo) Fixed, Variable, and Mixed Costs [LO1-4] Required: 1. If 29,000 units are produced and sold, what is the variable cost per unit produced and sold? 2. If 33,000 units are produced and sold, what is the variable cost per unit produced and sold? 3. If 29,000 units are produced and sold, what is the total amount of variable cost related to the units produced and sold? 4. If 33,000 units are produced and sold, what is the total amount of variable cost related to the units produced and sold? 5. If 29,000 units are produced, what is the average fixed manufacturing cost per unit produced? 6. If 33,000 units are produced, what is the average fixed manufacturing cost per unit produced? 7. If 29,000 units are produced, what is the total amount of fixed manufacturing overhead incurred to support this level of production? 8. If 33,000 units are produced, what is the total amount of fixed manufacturing overhead incurred to support this level of production (Round per unit values to 2 decimal places.)