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If 2x − 3 ≤ 5 and x + 1 > 0, what is the combined solution?

Answer and explanation

Correct answer: −1 < x ≤ 4

Because both inequalities must hold simultaneously, their solution sets must be intersected. First solve 2x − 3 ≤ 5: adding 3 gives 2x ≤ 8, and division by positive 2 gives x ≤ 4. Next solve x + 1 > 0: subtracting 1 gives x > −1. The numbers satisfying both conditions are therefore greater than −1 and at most 4, written as −1 < x ≤ 4. The lower endpoint is open because x = −1 makes the second inequality false, while the upper endpoint is closed because x = 4 satisfies the first inequality with equality. Option B incorrectly includes −1 and excludes 4; C and D retain only one incorrect boundary region. Hence A is correct.

Related tags

Compound InequalitiesIntersectionInterval SolutionAlgebraic SolutionAlgebraic Solution Of Linear Inequalities In One VariableLinear InequalitiesMathematicsClass 11 Mcq

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