1. Consider the following goods with their respective prices. Books: $5, apples: $4, smartphone: $100. What is the price of books in terms of apples? What is the price of smatphones in terms of apples? What is the price of books in terms of smartphones? 2. Suppose that one unit of labor produces 10 units of X. What is the number of units of labor needed to produce a unit of X? 3. The relative price of X in terms of Y is 5. What is the number of units of Y needed to buy a unit of X