Given the following information, determine the cost of goods sold at December 31 using the LIFO periodic inventory method.

December 2: 13 units were purchased at $7.80 per unit.
December 9: 18 units were purchased at $10.20 per unit.
December 11: 20 units were sold at $35.80 per unit.
December 15: 28 units were purchased at $10.95 per unit.
December 22: 26 units were sold at $35.80 per unit.

Mauro products distributes a single product, a woven basket whose selling price is $15 and whose variable expense is $12 per unit. the company’s monthly fixed expense is $4,200. required: 1. solve for the company’s break-even point in unit sales using the equation method. 2. solve for the company’s break-even point in dollar sales using the equation method and the cm ratio. (do not round intermediate calculations. round "cm ratio percent" to nearest whole percent.) 3. solve for the company’s break-even point in unit sales using the formula method. 4. solve for the company’s break-even point in dollar sales using the formula method and the cm ratio. (do not round intermediate calculations. round "cm ratio percent" to nearest whole percent.)