CUITS
Which of the following are needed to determine the equilibrium price of a
good or service?
O
A. The ratio between surplus and shortage.
O
B. The difference between costs and revenues.
O
C. An accurate calculation of production costs.
O
D. A supply curve and a demand curve.

The persian wars started when emperor darius i began an invasion of greece. what caused darius to decide to attack greece? a. greek pirates had raided persia's merchant ships and coastal towns. b. greek armies had attacked and taken over land that belonged to persia. c. greek city-states had supported rebellions in the persian empire. d. greek leaders had declared independence from the persian empire.