Calculate autonomous expenditure and the marginal propensity to consume. a. What is aggregate planned expenditure when real GDP is $6 billion?  b. If real GDP is $4 billion, what is happening to...

Calculate autonomous expenditure and the marginal propensity to consume.

a. What is aggregate planned expenditure when

real GDP is $6 billion?

 b. If real GDP is $4 billion, what is happening

to inventories?

 c. If real GDP is $6 billion, what is happening

to inventories?