What is the ratio that defines labor productivity?

The following price-quantity coordinates for gold used by U.S. dentists were observed: P = $875/ounce, Q = 342,000 . P = $200/ounce, Q = 706,000 . These points most likely lie along the

a. supply curve for gold for dental use. b. demand curve for dental use. c. equilibrium curve for dental use. d. production possibilities curve for dental use.

To produce 150 units of output, a firm must use 3 employee-hours. To produce 300 units of output, the firm must use 8 employee-hours. Apparently, the firm is:

A. not using any fixed factors of production. B. producing in the long run. C. experiencing negative returns. D. experiencing diminishing returns.