(Table: Keynesian Equilibrium Analysis with Taxes and Net Exports) Given the data in the table , if full employment income is $500 while the current equilibrium is $750, _____ gap exists, such that _____ in aggregate expenditures equal to _____ is needed to close the gap. 
Definitions:
Optimistic Thinker
An individual who tends to maintain a positive outlook on life, expecting the best possible outcome in various situations.
Monitoring
The act of observing and checking the progress or quality of (something) over a period of time.
Type A Personality
A personality characterized by high levels of competitiveness, self-imposed stress, impatience, and aggression.
Behaviorists
Psychologists who focus on observable behaviors and the ways in which they're learned.
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