3. value: 9.00 points Ng Corporation produces and sells only one product, its selling price is $100 and its variable cost is $80 per unit. The company's monthly fixed expense is $35,000 Required: 1. Using the equation method, determine the unit sales that are required to earn a target profit before tax of $5,000 nit sales units 2. Using the formula method, determine for the dollar sales that are required to earn a target profit before tax of $6,000. Dollar sales 3. Using the formula method, calculate the number of units that need to be sold to earn an after-tax income of $9,000, assuming a tax rate of 25%. Number of units units