Refer to the information provided in Figure 23.12 below to answer the question(s) that follow. 
Figure 23.12
-Refer to Figure 23.12. What is the equation for aggregate expenditure AE1?
Definitions:
Subduction
The process by which one tectonic plate moves beneath another plate and sinks into the mantle due to gravitational forces.
Conduction
The process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or electrical potential.
Subduction Zone
A region where one tectonic plate moves under another, leading to volcanic activity and earthquakes.
Lithosphere
The rigid outer layer of the Earth, consisting of the crust and the uppermost part of the mantle, directly involved in plate tectonics and continental drift.
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