The cogeneration plant institutes a policy that no one may work more than eight hours per day. As a result, which of the following statements is consistent with the 8-hour day
policy?

A. Only workers in the Fuel Gas Compressor House, the Turbine Generator Module,
near the Boiler, and in the Work Area must wear hearing protection
B. Only workers in the Fuel Gas Compressor House, the Control Room, and the
Demineralizer Station must wear hearing protection
C. Only workers in the Turbine Generator Module, Acid Caustic area, near the Boiler,
and in the Work Area must wear hearing protection
D. All indoor workers will need to wear hearing protection, but outdoor workers must
wear hearing protection

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.