Lin Corporation has a single product whose selling price is $135 and whose variable expense is $54 per unit. The company's monthly fixed expense is $40, 400. Using the equation method, determine for the unit sales that are required to earn a target profit of $4, 150. Unit sales Using the formula method, determine for the unit sales that are required to earn a target profit of $8, 800. (Round up your answer to the nearest whole number.) Unit sales