Glascro Company manufactures skis. The management accountant wants to calculate the fixed and variable costs associated with the leasing of machinery. Data for the past four months were collected as follows:

Month Lease cost Machine hours
April $15,000 800
May 10,000 600
June 12,000 770
July 16,000 1,000

Using the high-low method, calculate the variable rate for the lease cost.

a.$25
b.$15
c.$59
d.$65

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.