Multiple Choice

A small business owner uses a system of three linear equations to manage constraints for the total cost, storage space, and delivery weight of three products. To verify if a proposed inventory count, represented by the ordered triple (x,y,z)(x, y, z), is a valid solution to this system, the owner substitutes the values into each equation. Which of the following conditions must be met for the inventory count to be considered a solution to the system?

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Updated 2026-05-20

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