12. what are you doing when you make a decision at the margin?
o examining two primary options and their trade-offs before making a decision
o taking an all or nothing approach to a problem
o refusing to make a choice
reviewing several options of how to use one
dditional unit of a resource

Below is a description of a resource that you're considering using for a research paper. as you read the description, keep in mind what you've learned about historical thinking skills and use those skills in evaluating whether or not to use the source.

1. the responsibilities of the u.s. federal reserve system include overseeing the banking system and regulating the quantity of money in the economy setting the level of real interest rates working with congress to devise a financial plan for the country and execute the president's orders calculating and reporting the unemployment rate 2. to increase the supply of money when the economy is weak, the fed closes banks reduces inflation sells bonds buys bonds 3. the federal funds rate is the short-term interest rate that banks charge their best customers when borrowing banks earn on savings accounts with the fed banks charge each other when borrowing or lending to each other the fed charges banks when borrowing 4. when the fed increases the money supply and consequently lowers interest rates, the value of the dollar will rise by more in the market for foreign exchange, all else equal will fall, all else equal is not impacted by fed policy will rise, all else equal

Because they are located downstream from turkey on the tigris and euphrates rivers, these two nations are anticipating a reduction in water supply, as a result of 22 dams being built by the southeastern anatolia project. the two nations are a) iraq and iran. b) iraq and syria. c) iran and syria. d) saudi arabia and yemen.