WAEC Mathematics 2012 Objective — Question 10
Question 10 of 50 from the West African Examinations Council (WAEC) Mathematics 2012 Objective paper, with the correct answer and a full explanation.
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Represent the inequality −7<4x+9≤13 on a number line.
- A. Option A
- B. Option BCorrect
- C. Option C
- D. Option D
Explanation
−7−9<4x≤13−9 ⇒ −16<4x≤4 ⇒ −4<x≤1. This range (open at -4, closed at 1) is represented by option B.
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