The following data relate to voltaire company's defined benefit pension plan: ($ in millions)plan assets at fair value, january 1 $610expected return on plan assets 61actual return on plan assets 49contributions to the pension fund (end of the year) 102amortization of net loss 10pension benefits paid (end of the year) 12pension expense 74required: determine the amount of pension plan assets at fair value on december 31.

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?