Refer to the information above. In which period does net investment reach its peak?

When there is a shift in autonomous expenditure, why is there a multiple expansion of income and real GDP? Trace the multiplier effect through the first four rounds when there is an increase in autonomous expenditure of $40 billion and the marginal propensity to consume is 0.75

The largest component of aggregate expenditure in the United States is:

A. consumption. B. government purchases. C. exports. D. investment.