Rodney's Repair Shop has a monthly target profit of $21,000. Variable costs are 40% of sales, and monthly fixed costs are $27,000. Requirements 1. Compute the monthly margin of safety in dollars if the shop achieves its income goal. 2. Express Rodney's margin of safety as a percentage of target sales. 3. Why would Rodney's management want to know the shop's margin of safety? Requirement 1. Compute the monthly margin of safety in dollars if the shop achieves its income goal. Select the labels and enter the amounts to compute Rodney's Repair Shop's monthly margin of safety in dollars. Margin of safety in dollars =