If consumption is \$500 billion, investment is \$200 billion, and net exports are \$50 billion, what is the aggregate expenditure?

In a private open economy, if investment increases by \$200 million and net exports decrease by \$50 million, what is the net effect on aggregate expenditures?

If the MPC is 0.8 and income increases by \$500, what is the expected increase in consumption?

Which component is NOT part of the aggregate expenditures model in a private open economy?

How does the absence of government affect the aggregate expenditures model in a private open economy compared to a private closed economy?

Why are government purchases absent in the aggregate expenditures model of a private open economy?

If the multiplier is 4 and investment increases by \$100 million, what is the total impact on GDP?

If a country's investment decreases due to a decline in business confidence, how would this affect the aggregate expenditures model?

What is the formula for calculating aggregate expenditures in a private open economy?

How is macroeconomic equilibrium represented in a private open economy using the 45-degree line?