Refer to the information provided in Figure 9.5 below to answer the questions that follow. 
Figure 9.5
-Refer to Figure 9.5. Which of the following equations best represents the aggregate expenditure function?
Definitions:
Perfectly Inelastic Demand
Product or resource demand in which price can be of any amount at a particular quantity of the product or resource that is demanded; when the quantity demanded does not respond to a change in price; graphs as a vertical demand curve.
Perfectly Elastic Demand
Product or resource demand in which quantity demanded can be of any amount at a particular product or resource price; graphs as a horizontal demand curve.
Graphed
A method of representing data visually using charts or plots to illustrate relationships between different variables.
Price Elasticity of Supply
A measure of how much the quantity supplied of a good responds to a change in its price.
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