Following is consumption schedules for three private closed economies. DI signifies disposable income and C represents consumption expenditures. All figures are in billions of dollars. Refer to the data below. Suppose the consumption is increased by $2 billion in each of the three economies. This change could have been caused by: 
Definitions:
Regulates
To control or maintain the rate or speed of a machine or process so that it operates properly.
Bioecological Theory
A theory that emphasizes the importance of multiple levels of environmental influence on individual development, originally proposed by Urie Bronfenbrenner.
Concentric Circles
Concentric circles are circles with a common center, where each circle has a different radius from the others, creating a pattern of nested circles.
Bioecological Theory
A framework for understanding human development that considers the complex interactions between individuals and their varying environments, proposed by Urie Bronfenbrenner.
Q7: Refer to the above table. If the
Q44: Increases in the value of the product
Q65: According to some studies in Canada, the
Q85: If average nominal income was about $15,000
Q109: Planned plus unplanned investment equals:<br>A) actual investment.<br>B)
Q132: Refer to the above diagram. Other things
Q158: Refer to the above table. The total
Q183: A decline in the real interest rate
Q184: Refer to the below diagram, which aggregate
Q227: Refer to the above information. When the