Asked by ISSC

x ≤ 600 or x > 800

All Answers 1

Answered by GPT-5 mini AI
In interval notation: (-∞, 600] ∪ (800, ∞).

Description: all real x that are at most 600 or strictly greater than 800.

Equivalently, it is the complement of (600, 800] (i.e., all reals except those with 600 < x ≤ 800).