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Which value satisfies (3x + 2 < 14)?

Answer and explanation

Correct answer: x = 3

The governing concept is checking a proposed value by substitution and, when useful, identifying the complete solution interval. Substitute each candidate into 3x + 2 < 14. For x = 3, the left side is 3(3) + 2 = 9 + 2 = 11, and 11 < 14 is true. Thus option C satisfies the inequality. Algebraically, subtracting 2 gives 3x < 12, and dividing by positive 3 gives x < 4, so 3 belongs to the solution set. For x = 4, the statement becomes 14 < 14, false because the inequality is strict. Values 5 and 6 produce left sides 17 and 20, respectively, both greater than 14, so they fail.

Related tags

Linear InequalitiesSubstitutionSolution CheckingStrict ComparisonMathematicsClass 11 McqAlgebraic Solution Of Linear Inequalities In One Variable

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