Kerryanne has an e-tail poster business. Suppose Kerryanne expects to sell 2.800 posters. Her average sales price per poster is $42 and her average cost per poster is $29. Her fixed expenses total $7,410. Compute her margin of safety a. in units (posters) b. in sales dollars c. as a percentage of expected sales a. Begin by determining the formula, then compute the margin of safety in units (posters). Expected sales in units $117600 Break-even sales in units $23940 Margin of safety in units $93600