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What is the solution of the compound inequality (5\le 3x-1<2x+11)?

Answer and explanation

Correct answer: \(2\le x<12\)

Solve both parts of the compound inequality separately. From \(5\le 3x-1\), we get \(6\le 3x\), so \(x\ge 2\). From \(3x-1<2x+11\), we get \(x<12\). Applying both conditions together gives \(2\le x<12\). Option D incorrectly excludes 2 and includes 12. Exam tip: For a compound inequality, solve each condition and then write their common interval.

Related tags

Linear InequalitiesCompound InequalityOne VariableInterval NotationClass 11 AlgebraAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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