Frank owns an apple farm and plans to spend 4 hours today picking apples.The number of apples he can pick per hour depends on the total number of hours he spends working in either the east orchard or the west orchard in the manner shown in the table below. 
What is the marginal benefit to Frank of the 2nd hour he spends picking in the east orchard?
Definitions:
Visual Object Memory
The cognitive ability to remember visual objects and their details over time.
Parahippocampal Region
A region in the brain associated with memory encoding and retrieval located adjacent to the hippocampus.
Perirhinal Region
A part of the brain involved in memory and recognition, located in the medial temporal lobe adjacent to the entorhinal cortex.
Grid Cells
Neurons located in the brain's entorhinal cortex that activate when an animal is at multiple locations forming a grid-like pattern, crucial for spatial navigation.
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