Martinez company's relevant range of production is 8,300 units to 13,300 units, When it produces and sells 10,800 units, It's unit cost are as follows: 11-a If 8,800 units are produced, what is the total amount of manufacturing overhead cost incurred to support this level of production? 11-b If 8,800 units are produced what is the total amount of manufacturing overhead cost expressed on a per unit basis? 12-a 13,300 Units are produced, what is the total amount of manufacturing overhead cost incurred to support this level of production? 12-b If 13,300 units are produced, what is the total amount of manufacturing overhead cost expressed on a per unit basis? 13 If the selling price is $21.80 per unit, what is the contribution margin per unit sold? 14-a If 11,800 units are produced, what is the total amount of direct manufacturing cost incurred to support this level of production? 14-b if 11,800 units are produced what are the total amount of indirect manufacturing costs incurred to support this level of production? 15 What total increments cost will Martinez incur if it increases production from 10,800 to 10,801 units?