Four costs incurred by Chula Vista Farms are summarized below: Cost 1 Cost 2 Cost 3 Cost 4 2,000 units $30,000 $21,000 $16,000 $12,000 4,000 units $30,000 $42,000 $26,000 $20,000 Which of these costs are strictly variable (as opposed to fixed or mixed costs)? costs 1 and 4 costs 1 and 2 costs 2 and 3 Longknife Company has a contribution margin ratio of 40% and variable costs that are 60% of sales. Fixed costs are estimated to be $350,000. The company would like to earn a target profit of $75,000. Given this information, how much sales revenue will the company need to earn the target profit