Which represents the solution set of the inequality 5 x minus 9 is less than or equal to 21 ?

Add 9 to both sides of 5x − 9 ≤ 21 to get 5x ≤ 30. Divide both sides by 5, keeping the inequality direction the same, so x ≤ 6. This matches choice A, “x is less than or equal to 6.”

AI-written and checked against the verified answer.