Unlike the New York Stock Exchange, NASDAQ is an electronic stock market with trades executed through a sophisticated computer and telecommunications network

A monopolist is

a. one of a large number of small firms that produce a homogeneous good b. one of a small number of large firms that produce a differentiated good c. a single seller of a product with many close substitutes d. one of a small number of large firms that produce a homogeneous good e. a single seller of a product with no close substitutes

In the simple circular flow model, if planned I exceeds planned S, then

a. the economy is not at equilibrium. b. the size of the circular flow is increasing. c. if the economy is at full employment, then prices will rise. d. All of these.