BALL Homework: Chapter 21 Exercises Score: 0 of 1 pt 14 of 14 complete HW Score: 13,33%, 2 of 15 pts Question Help O E21-24 (similar to) Harper's Helpers provides locksmith services. One type of service cal is to evaluate private residences for security concerns and make recommendations for a slotyplan. Use the data below to determine the company's total corbution contribution margin per service call and contribution marginalio when 24 service calls are made in the month of June Click the loon to view the data) Select the forma label needed to compute the contribution margin. Then complete the table to calculate the contribution margin per service call then the company's total contribution margin Per call Data Table Contribution Margin Service Revenue Variable Cou Fred Costs 150 per service 15 per service cal 31.000 per month Print Done