Karl Marx believed the central figures in an industrial economy were the

In an attempt to maintain the peso exchange rate in 1994, the Mexican central bank

A) purchased dollars and sold pesos. B) sold both dollars and pesos. C) sold dollars and purchased pesos. D) purchased both dollars and pesos.

In the modern Keynesian model, over much of its range the short-run aggregate supply (SRAS) curve is

A) horizontal. B) vertical. C) upward sloping. D) downward sloping.