please explain thoroughly

1.425,000 7,000 + x = 92,00 Fixed cost=85,000 3 Boston's Dairy has just opened its main yogurt factory in upstate Massachusetts. This main factory can produce 3,500 boxes of yogurt monthly (each box contains twelve 6-oz cups). Due to overwhelming demand for the company's product, Boston's Dairy has signed a contract to rent a new factory, which can produce up to 8,000 boxes per month. The monthly total fixed costs are $40,000 in the main factory and $16.000 in the new factory. The variable production cost of yogurt is $4.50 per box in the main factory. The variable production cost in the new factory is $6.0 per box as materials have to be redistributed from the main factory. The average selling price is $15, and the variable selling expense is $i per box, which is the same for all factories. In addition, Boston's Dairy plans to pay its sales force $0.80 per box as added bonus for every box sold above the break-even point. How many boxes does the company have to produce and sell in order to earn a net operating income of $10,000 per month (round all decimal up to one box)? New 11.500 boxes 6,344 boxes 3,200 7,733 boxes 4,233 boxes FC = 400000 1 FC = 16,000 & 175 1,389 boxes Units 3560 8000 I velunit: 7 Veunit: 5.5 Cmfonit 9.5 56,000 40000114,000 56.000