Western Electric has 35,000 shares of common stock outstanding at a price per share of $85 and a rate of return of 12.70 percent. The firm has 7,600 shares of 8.40 percent preferred stock outstanding at a price of $98.00 per share. The preferred stock has a par value of $100. The outstanding debt has a total face value of $422,000 and currently sells for 114 percent of face. The yield to maturity on the debt is 8.26 percent. What is the firm's weighted average cost of capital if the tax rate is 40 percent

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?