Salem Internet Services is an internet service provider for commercial and residential customers. The company provided the following data for this two types of customers the month of August. For each type of customer, determine both the contribution margin per customer and the contribution margin ratio. Round to two decimal places. Which type service is not profitable? Calculate the contribution margin per customer. Begin by selecting the formula labels, then enter the amounts and calculate the contribution margin per customer for each business segment. Calculate the contribution margin ratio. Select formula, then calculate the contribution margin ratio for each business segment. Which type service is more profitable? The business segment had the highest contribution margin ratio