"Juan suffered a terrible fright late one night, and ever since he has felt distracted and lethargic. His father believes he has developed susto, an illness caused by anxiety or fright. Which illness-causation theory does Juan's father follow?"

i want to say death; parole, probation, and fines are still being used all the time.

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .

where is the rest of the question. this isn't making sense. can you upload a picture of the question?

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.