Which represents the solution of –9.5 + 6x ≥ 42.1 using interval notation?

Add 9.5 to both sides: 6x ≥ 51.6. Divide by 6 to get x ≥ 8.6. Since 8.6 is included, use a square bracket at 8.6, and the interval extends upward without bound: [8.6, ∞), choice B.

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