Which term is synonymous with a perfectly competitive firm?

According to the textbook, when a foreign government provides aid to a poor nation, it

A) interferes in the domestic affairs of the poor nation. B) behaves in the interest of the poor nation. C) pursues the global interest. D) does all of the above. E) does none of the above.

Refer to Figure 1-3. Calculate the area of the trapezoid X

A) $270 B) $720 C) $810 D) $2,520