Explain why economists differentiate between a “change in demand" and a “change in quantity demanded." Why don't they use these phrase
interchangeably?

This is a question for economics

change in demand and change in quantity demanded have two pretty different meanings.

Explanation:

change in demand is meaning there is a change it what people may need at the moment but change in quantity demanded is referring to how much they may need of a certain thing

answer: that government dose not want hire eric but hire minorities and woman on affirmative action quotas.

explanation:

the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.