Which best describes Raegans beliefs about economic growth?

Supply-side economics

Explanation:

Ronald Reagan's proposal were divided in four main pillars: reduce government spending, reduce federal income tax and capital gains tax, and reduce government regulation and inflation.

By this, he presented the return to free enterprise and free market economy. Reagan used the macroeconomic model theory called "supply-side economics", that is the possibility of economic growhty by reducing taxes and decreasing regulations.