Brent called insurance companies and got insurance quotes for the three trucks. Both the 1996 Ford F150 and the 1998 Chevy 1500 were quoted for $250 and the 2000 Toyota Tundra was quoted for $245. To help Brent make his decision gather some more reliable information by using newspapers, or looking at their Web sites, and reviewing consumer magazines and Web sites. Also, look at the manufacturer Web site or www. fueleconomy. gov for information about gas mileage. List the sources you use and include the notes you take from each source.

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.