​A Manager for a Food Company Is Putting Together a Buffet

​A manager for a food company is putting together a buffet and she is trying to determine the best mix of
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crab and steak to be served. Below are variable definitions she developed including vitamin, mineral and protein requirements. Also included below is an optimal simplex tableau she obtained from her
computations. She is interested in interpreting what it means.
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Variable definitions:
x_l = amount of crab (oz) to be served per buffet batch
x₂ = amount of steak (oz) to be served per buffet batch
s₁ = vitamin A units provided in excess of requirements
s₂ = mineral units provided in excess of requirements
s₃ = protein units provided in excess of requirements
Optimal tableau ​