If imports of Japanese automobiles are restricted, prices of U.S-made automobiles in the United States will be higher than they would otherwise be

Which of the following goods is rival in consumption and is also excludable?

A) A fireworks display B) A movie shown on cable television C) A DVD D) A magic show in a public park.

Refer to the above table. What does the marginal physical product equal when the amount of labor goes from 12 to 13 units?

A) 58.5 B) 70 C) 690 D) 760