Question

A number minus 1 is at most 9, or two times the number is at least 24

Answer 1

x - 1 ≤ 9 or 2x ≥ 24

+1 +1
`(2x)/(2)`
`(24)/(2)`

x ≤ 10 or x ≥ 12

Graph: <----------------10 12 ---------------->

Interval Notation: (-∞, 10] U [12, ∞)