In January 2019, Rankine Company paid $8,500,000 for land and a building. An appraisal estimated that the land had a fair value of $2,500,000 and the building was worth $6,000,000. Rankine estimated that the useful life of the building was 30 years, with no residual value. a. Calculate annual depreciation expense using the straight-line method. $Answer b. Calculate depreciation for 2019 and 2020 using the double-declining-balance method. Round answers to the nearest whole number. 2019 $Answer 2020 $Answer c. Assume that in 2021, Rankine changed its estimate of the useful life of the building to 25 years. If the company is using the double-declining-balance method of depreciation, what amount of depreciation expense would Rankine record in 2021

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.