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. Solve for the company's break-even point in unit sales using the equation method. Solve for the company's break-even point in dollar sales using the equation method and the CM ratio. Solve for the company's break-even point in unit sales using the formula method. Solve for the company's break-even point in dollar sales using the formula method and the CM ratio