An electric power plant uses solid waste for fuel in the production of electricity. the cost y in dollars per hour to produce electricity is yequals=1010plus+0.60.6xplus+0.230. 23upper x squaredx2, where x is in megawatts. revenue in dollars per hour from the sale of electricity is 1313xminus−0.40.4upper x squaredx2. find the value of x that gives maximum profit

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?

In footnotes to its 2016 annual report, bancfirst corp. reported that held-to-maturity debt securities with an amortized cost of $4,365 thousand had an estimated fair value of $4,403 thousand. the balance sheet reported:

The voting age in america should be changed from 18 to 16