If the demand for software engineers ____ slower than does supply, wages of software engineers will ____

Suppose that tattoos gained immense popularity with retired people as well as college students. This gain in popularity best reflects which of the following influences on buying plans?

A) the price of a substitute good B) income C) expectations D) preferences E) the price of a complement good

A legal barrier is created when a firm

A) has economies of scale, which allow it to produce at a lower cost than two or more firms. B) is granted a public franchise, government license, patent, or copyright. C) produces a unique product or service. D) produces a standardized product or service. E) has an ownership barrier to entry.