Suppose the United States is currently producing 160,160 tons of hamburgers and 7,272 tons of tacos and Mexico is currently producing 1,616 tons of hamburgers and 4,040 tons of tacos. If the United States and Mexico each specialize in producing only one good? (the good for which each has a comparative? advantage), then a total of nothing additional ton(s) of hamburgers can be produced for the two countries combined? (enter a numeric response using an integer)

When cell phones were first entering the market, they were relatively large and reception was undependable. all cell phones were essentially the same. but as the technology developed, many competitors entered, introducing features unique to their phones. today, cell phones are only a small fraction of the size and weight of their predecessors. consumers can buy cell phones with color screens, cameras, internet access, daily planners, or voice activation (and any combination of these features). the history of the cell phone demonstrates what marketing trend?