An investment will pay $100 at the end of each of the next 3 years, $250 at the end of Year 4, $400 at the end of Year 5, and $500 at the end of Year 6.A) If other investments of equal risk earn 6% annually, what is its present value? Round your answer to the nearest cent. B) If other investments of equal risk earn 6% annually, what is its future value? Round your answer to the nearest cent.

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?