Which barrier to entry is an exclusive right granted to the author or composer of a literary, musical, dramatic or artistic work?

If households and firms decide to hold less of their money in checking account deposits and more in currency, then initially, the money supply

A) will decrease. B) will not change. C) will increase. D) may increase or decrease.

Suppose the production of mp3 players can be represented by the following production function: q = L0.4K0.4. Which of the following statements is TRUE?

A) The production function has decreasing returns to scale. B) The production function has increasing returns to scale. C) The production function has constant returns to scale. D) Returns to scale vary with the level of output.