According to the mean-variance criterion, portfolio A is better than portfolio B for a risk-averse investor whenever .

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?

Which of these is an example of innovation?

Circuittown commenced a gift card program in january 2018 and sold $12,150 of gift cards in january, $19,150 in february, and $18,100 in march of 2018 before discontinuing further gift card sales. during 2018, gift card redemptions were $7,850 for the january gift cards sold, $4,350 for the february cards, and $4,250 for the march cards. circuittown considers gift cards to be “broken” (not redeemable) 10 months after sale. required: 1. how much revenue will circuittown recognize with respect to january gift card sales during 2018? 2. prepare journal entries to record the sale of january gift cards, redemption of gift cards (ignore sales tax), and breakage (expiration) of gift cards. 3. how much revenue will circuittown recognize with respect to march gift card sales during 2018? 4. what liability for deferred revenue associated with gift card sales would circuittown show as of december 31, 2018?