Weegy: The answer is letter A. User: What economic theory did Ronald Reagan base his policies upon after becoming President in 1980?
A. supply-side economics
B. Keynesian economics
C. demand-side economics
D. classical economics
Weegy: A. supply-side economics User: How does the expenditure approach calculate GDP?
A. It adds up all the incomes in the economy.
B. It adds up the value of four groups of final goods ... (More)