Final answer:
To write an equation representing the relationship between the number of packages (P) and the number of dollars (D), we need more context such as the cost per package. Without this information, we cannot accurately complete the equation.
Step-by-step explanation:
We begin by determining the equation to represent the relationship between the number of packages (P) and the number of dollars (D). Given the quantity equation of money MV = PQ, where M is the money supply, V is the velocity of money, P is the price level, and Q is the quantity of goods and services. We are told that initially V = 3, M = 4,000 (billion), and P = 100. By substituting these values into the equation, we can solve for Q, which yields:
4,000 x 3 = 100 x Q
Next, to determine the relationship between P and D, we need more context or a specific relationship that defines how packages and dollars are related. In a typical scenario, the price of each package would be given, letting us express P as a function of D. For example, if each package costs $5, the equation would be:
P = D / 5
However, without specific information about the cost of each package or how the number of packages relates to the number of dollars spent, we cannot complete the equation accurately.