Gabby works for an online birthday-celebration company. The company’s key business is to receive orders to send birthday cakes, cards, and flowers to people who have their birthdays on particular days. Therefore, the company obviously maintains a huge database of customers and most of their personal details. Gabby’s colleague Marcos uses some of this information to date a few female single customers. Is the behavior of Marcos appropriate per any standards? A. Yes, he was only innocuously dating the female customers. B. Yes, he is not making any business out of the information. C. No, because per the FTC regulations, all personal details of customers should be protected. D. No, because using personal information of the same gender is permissible, but not of the opposite gender.

David consumes two things: gasoline (g) and bread (b). david's utility function is u(g, b) = 10g^0.25 b^0.75. use the lagrange technique to solve for david's optimal choices of gasoline and bread as a function of the price of gasoline, p_g, the price of bread, p_b, and his income m. with recent decrease in the price of gasoline (maybe due to external shock such as shale gas production) does david increase his consumption of gasoline? for david, how does partial differential g/partial differential p_g depend on his income m? that is, how does david's change in gasoline consumption due to an increase in the price of gasoline depend on his income level? to answer these questions, find the cross-partial derivative, |partial differential^2 g/partial differential m partial differential p_g.