At the present time, Perpetualcold Refrigeration Company (PRC) has 10-year noncallable bonds with a face value of $1,000 that are outstanding. These bonds have a current market price of $1,278.41 per bond, carry a coupon rate of 11%, and distribute annual coupon payments. The company incurs a federal-plus-state tax rate of 25%. If PRC wants to issue new debt, what would be a reasonable estimate for its after-tax cost of debt (rounded to two decimal places)

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?