Suppose demand is given by the equation: 
Using the midpoint method, what is the price elasticity of demand between $7 and $8?
Definitions:
Dream Analysis
A therapeutic technique that interprets the symbolic meaning of dreams to gain insights into a person's subconscious and psychological state.
Free Association
A psychoanalytic technique where the patient speaks freely about thoughts, feelings, or images that come to mind, revealing unconscious processes.
Empirical Validation
The process of confirming hypotheses or theories through observation and experimentation, ensuring they are based on evidence.
Aftercare Plan
A structured plan designed to support an individual's continued recovery or progress after a primary course of treatment.
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