Hello can you please help me with these questions and explain everything for me ?

1. Which of the following models was severely challenged and replaced after stagflation in the 1970s? a. Austrian Business Cycle Theory b. Phillips Curve c. Solow Model d. Law of Demand 2. Which of the following is an end that macroeconomists do not agree on achieving? a. Maximization of economic freedom b. Keeping low unemployment C. Maintaining stable prices d. Rapid economic growth 3. Consider this Cobb-Douglas production function: Y = K 'L . What does this function exhibit? a. Diminishing returns to scale b. Increasing returns to scale c. Constant returns to scale d. None of the above 4. After adjusting for inflation, real GDP per person in the U.S. was higher in 1980 than it is today. a. True b. False 5. To a macroeconomist, "income" equals total wages, while "GDP" equals total wages plus total capital income. a. True b. False 6. In the modern U.S., capital's share of total income is recently closest tor a. 17% b. 27% C. 37% d. 47% 7, Which of these crises dismantled the Keynesian consensus? a. The Great War b. Stagflation in the 1970s c. The Great Depression d. The Great Recession B. Which of the following is an exogenous variable in the supply function for good X