Contribution Margin Concepts The following information is taken from the 2017 records of Hendrix's Guitar Center. Required (a.) Determine the annual break-even dollar sales volume. Contribution margin ratio: Annual break-even dollar sales volumes: \$ Annual break-even dollar sales volumes: $ (b.) Determine the current margin of safety in dollars. $ (c.) What is the annual break-even dollar sales volume if management makes a decision that increases fixed costs by $35,000