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Solve the inequality (11-4x\leq -1).

Answer and explanation

Correct answer: (x\geq 3)

The direct answer is option A: x ≥ 3. Solve step by step: 11 − 4x ≤ −1. Subtract 11 from both sides to get −4x ≤ −12. Now divide by −4. Division by a negative number reverses the inequality sign, so x ≥ 3. Option A is correct. Option B, x ≤ 3, forgets to reverse the sign and is therefore incorrect. Option C, x > 3, wrongly excludes x = 3; checking x = 3 gives 11 − 12 = −1, which is allowed because equality is included. Option D, x < 3, has both the direction and the endpoint wrong. Always test the boundary: x = 3 works. Memory cue: multiplying or dividing an inequality by a negative reverses its sign.

Related tags

Linear InequalitiesIntroductionClass 11

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