Suppose an individual has utility of wealth given by u(w) = w. a. Does this utility function exhibit positive marginal utility of wealth, i.e. is U'(w) > 0? What does this mean? b. Does this utility function exhibit increasing or decreasing marginal utility of wealth, i.e. is U" (w) > 0, or U" (w) < 0? What does this mean? Is this utility function consistent with risk aversion? Explain. d. Define what a risk premium is and why it is important. c. +