Which scenario best describes the difference between a monopolist and a competitive firm?
A monopolist chooses output where marginal revenue equals marginal cost
A competitive firm's short-run profit is always zero; a monopolist might have a positive short-
run profit.
A competitive firm cannot choose its level of output; a monopolist chooses its level of output.
A competitive firm sets price equal to marginal revenue; a monopolist sets price equal to
marginal cost.
A competitive firm's marginal-revenue curve is horizontal

Hanna intends to give her granddaughter, melodee, her antique hat pin. this heirloom has been kept under lock and key in the wall vault in the library of hanna's house in virginia. the hat pin is currently the only item in the vault. when hanna is visiting melodee in connecticut, hanna gives melodee the only key to the vault. melodee is grateful for the present and excitedly accepts. in this situation has there been a completed gift?

Emil motycka is considered an entrepreneur because

You are the manager of the packaging department in a cookie factory. (obviously, the packaging employees cannot eat the cookies that are transferred in during the period.) after your employees insert cookies into colorful packages (step 1) for display on store shelves, the packages of cookies are then boxed using cardboard cartons (step 2) for shipment to stores. each unit of product is represented by a carton of packaged cookies. the packaging department began the period with 1,000 units of cookies. during the period, 5,000 units of cookies were transferred in from the baking department and 5,500 units of cookies were transferred out to the finished goods department. the number of units of cookies in the ending inventory of the packaging department equals: