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Which statement is correct after simplifying 15 ≤ 4x - 1?

Answer and explanation

Correct answer: x ≥ 4

The governing idea is to perform the same operation on both sides while preserving the order. Starting from 15 ≤ 4x - 1, add 1 to both sides, obtaining 16 ≤ 4x. Dividing by the positive number 4 does not reverse the inequality, so 4 ≤ x. Written with x on the left, this is x ≥ 4; hence option A is correct. The equality sign remains because the original inequality includes equality. Option B reverses the direction, while options C and D either omit the boundary or point in the wrong direction. Checking x = 4 gives 15 ≤ 15, confirming that 4 is included.

Related tags

Linear InequalityPositive DivisionBoundary ValueAlgebraic Solution Of Linear Inequalities In One VariableLinear InequalitiesMathematicsClass 11 Mcq

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