Step-by-Step Advanced Placement (AP) Tutorials for Easy Learning
A word creation game uses a set of small letter tiles, all of which are initially in a tile bag. A partial implementation of a TileBag class is shown below.public class TileBag{ //tiles contains all tiles in the bag private List tiles; //size is the number of not-yet-used tiles private int size; //Constructors and other methods are not shown.}Consider the following method in the TileBag class that allows a player to get a new tile from the TileBag.public Tile getNewTitle(){ if(size ==0) // no tiles left return null; int index = (int) (Math.random() * size); size--; Tile temp = tiles.get(index); /* code to swap tile at position size with tile at position index */ return temp;} Which /* code to swap a tile at position size with tile at position index */ performs the swap correctly?tiles.set(size, temp);tiles.set(index, tiles.get(size));tiles.get(index, tiles.set(size));tiles.get(size, temp);tiles.swap(index, size);tiles.get(size, temp); tiles.get(index, tiles.set(size));tiles.set(index, tiles.get(size));tiles.set(size, temp);
Country X is currently maximizing its resources and employment to produce consumer goods and capital goods. The government has a balanced budget.(a) Illustrate the economy of Country X on a fully labeled production possibilities curve, assuming increasing opportunity cost. Label a point where the economy is currently operating as point X.(b) The government of Country X reduces the tax rates for interest earned on household savings. Would the national savings decrease, increase, or stay the same? Explain.(c) On a fully labeled loanable funds market graph, illustrate the impact of the policy from part (b) on the equilibrium real interest rate and the equilibrium quantity of funds.(d) Assume that Country X is still maximizing resource use. On your PPC graph from part (a), illustrate the short-run impact of the change in real interest rates. Illustrate a new production point as point R.(e) In the long run, will the long-run aggregate supply of Country X decrease, increase, or stay the same? Explain.Country Y(f) Country Y has a real GDP per capita of $75, and it has a population of 2 million. Calculate Country Y's real GDP.(g) Four years later, the GDP per capita of Country Y is $90. Assume there has been no technological advancement and no increase in physical capital in that time period. Identify a policy that could lead to this increase.(h) Calculate the economic growth rate for Country Y over the time period described in part (g). Show your work.
(a) Draw the foreign exchange market for euros in terms of pounds. Label the equilibrium exchange rate (e1), the equilibrium quantity (Q1), and the current exchange rate (ec). Assume that there is a shortage of the euro at the current rate.(b) Assume the current exchange rate for the Chinese yuan in terms of the U.S. dollar is $0.20 per yuan. Based on this information, draw the foreign exchange market for dollars. Assume the market is in equilibrium.The United States and Mexico are trading partners. (c) Using side-by-side graphs of the exchange market for the U.S. dollar and the Mexican peso, show the impact of an increase in the demand for pesos.(d) Based on the change indicated in part (c), is the U.S. dollar appreciating or depreciating?(e) If the United States began with a current account balance of zero, will the change in part (c) result in a current account surplus, deficit, or no change? Explain.(f) Based on your answer to part (e), what must be the change to the capital and financial account of the United States?(g) Assume the final exchange rate for the Mexican peso is $0.05. Calculate the exchange rate for the dollar in terms of the peso.(h) Assuming efficient production and mutually beneficial trade, where would consumption for the United States and Mexico be relative to their respective production possibility curvesinside, on, or beyond the PPCs? Explain.