Short Answer

Maintenance Log: Interval Notation for Safety Deviations

A warehouse safety technician is documenting the operational thresholds for an automated ventilation sensor. The system is programmed to trigger a high-speed fan if the air pressure deviation xx satisfies the compound inequality 25x3{}2 - 5x \leq -3 or 5+2x3{}5 + 2x \leq 3. The technician has determined that the individual solutions are x1x \leq -1 or x1x \geq 1. In the system's maintenance log, these combined conditions must be recorded using standard interval notation. Provide the correct interval notation for the set of values that trigger the fan.

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Updated 2026-05-25

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