Use the following to answer questions: 
-(Table: Natasha's Total Utility) Look at the table Natasha's Total Utility. Natasha earns $50,000 per year but faces losing $20,000 of it if she is late with her work. If there is a 25% probability that Natasha will be late with her work and her income will equal $30,000, what certain income leaves Natasha just as well off as her uncertain income?
Definitions:
Cognitive Development
Cognitive development is the process by which a child's ability to think, reason, and understand the world around them evolves over time.
Reversibility
The realization that any change in the shape, position, or order of matter can be reversed mentally.
Concrete Operations
A stage in Piaget's theory of cognitive development where children gain the ability to think logically about concrete events.
Object Permanence
The cognitive understanding that objects continue to exist even when they cannot be seen, heard, or touched, typically developed in infancy.
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