(12 points - 3 each) in the month of June, Nadine's Beauty Salon gave 2,500 haircuts, shampoos, and permanents at an average price of $40. During the month, fixed costs were $18,000 and variable costs were 70% of sales. Instructions (1) Using the contribution margin technique, compute the break-even point in dollars. (a2) Using the contribution margin technique, compute the break-even point in units. (61) Compute the margin of safety in dollars. (62) Compute the margin of safety as a ratio