3.3. Consider a fiat money/barter system like that portrayed in this chapter. Suppose the number of goods J is 4. Each search for a trading partner costs a person 3 units of utility. In addition, suppose the exchange cost of goods is 2 units of utility. What is the maximum value of the exchange cost for money, Am, such that expected lifetime utility with money is at least as great as the expected lifetime utility under barter?