Ames and Rosenberg (1963) argue that demand for manufactured goods in the U.S. tended to be utilitarian in nature rather than "high quality," and this encouraged development of mass production methods

In the above table, the firm

A) must be in a perfectly competitive market because its marginal revenue is constant. B) must be in a perfectly competitive market because its marginal cost curve eventually rises. C) cannot be in a perfectly competitive market because its short-run economic profits are greater than zero. D) cannot be in a perfectly competitive market because its long-run economic profits are greater than zero.

With the real wage on the vertical axis and the unemployment rate on the horizontal axis, we know that

A) the WS curve is upward sloping. B) the WS curve is downward sloping. C) the PS curve is upward sloping. D) the PS curve is downward sloping.