JAMB Mathematics 1987 Question 26

Question 26

Inequalities

Solve the inequality x − 1 > 4(x + 2)

  1. A.x > −3
  2. B.x < −3
  3. C.2 < x < 3
  4. D.−3 < x < −2
Show the answer and explanation

Answer: B (x < −3)

Explanation

x − 1 > 4x + 8 gives −3x > 9. Dividing by −3 reverses the sign: x < −3.