Isabel is a new hire at an IT firm. She experiences trouble performing the job assigned to her even though she has the necessary skill set to complete the job. She has little clarity about team responsibilities and details of her work activities and has a difficult time comprehending the work activities. In this case, which of the following elements of the high-performance work systems has been implemented ineffectively by the organization?

A. Organizational structure.
B. Staffing.
C. Reward systems.
D. Task design.
E. Information systems.

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.