Last year Harrington Inc. had sales of $325,000 and a net income of $17,000, and its year-end assets were $230,000. The firm's total-debt-to-total-assets ratio was 45.0%. Based on the DuPont equation, what was the ROE? 13.02% 13.44% 13.83% 14.00% 14.80%

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?