Exercise 6-4 Computing and Using the CM Ratio [LO6-3] Last month when Holiday Creations, Inc., sold 36,000 units, total sales were $317,000, total variable expenses were $259,940, and fixed expenses were $36,200. Required: 1. What is the company’s contribution margin (CM) ratio? 2. What is the estimated change in the company’s net operating income if it can increase total sales by $1,200? (Do not round intermediate calculations.)

Google started as one of many internet search engines, amazon started as an online book seller, and ebay began as a site where people could sell used personal items in auctions. these firms have grown to be so large and dominant that they are facing antitrust scrutiny from competition regulators in the us and elsewhere. did these online giants grow by fairly beating competition, or did they use unfair advantages? are there any clouds on the horizon for these firms -- could they face diseconomies of scale or diseconomies of scope as they continue to grow? if so, what factors may limit their continued growth?