What is the difference between aggregate expenditure and consumption spending?

Suppose we drop the assumption that net exports do not depend on real GDP$.$ Draw a graph with the value of net exports on the vertical axis and the value of real GDP on the horizontal axis. Now, add a line representing the relationship between net exports and real GDP$.$ Briefly explain why you drew the graph the way you did.

According to a report from the U$.$S$.$ Department of Commerce, new orders for capital goods increased by $$6\mathrm{.}7$ billion between April and May $2009.$ Spending on capital goods is counted as part of which component of aggregate expenditure? Use a $45-$ line diagram to illustrate the effect of this increase in spending on equilibrium GDP$.$ For simplicity, assume that the adjustment to the new equilibrium GDP happened immediately and that there were no changes in the other components of aggregate expenditure.

$C=2,550+(MPC)Y$

$I=800$

$G=1,100$

$Nx=50$

If the equilibrium level of GDP is $$11,250,$ using the equations for $C,$I,$G,$ and $Nx$ shown above, find the value of the marginal propensity to consume.

Suppose the United States experiences a long period of relatively stable prices while other countries experience long periods of inflation. How will this affect U$.$S$.$ net exports?