After firm A acquired firm B, it raised the prices for the goods produced by both firms. This can increase profits if those goods are

A tax collected at each stage of the production process is called a(n) ________ tax

A) payroll B) excise C) value-added D) wealth

In the New Keynesian open economy model

A) the nominal exchange rate is always fixed. B) prices are flexible. C) net exports depends on the relative price of foreign goods to domestic goods. D) the nominal exchange rate is always flexible.