Question 10

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waecmaths question: 

Represent the inequality $-7<4x+9\le 13$ on a number line

Option A: 

Option B: 

Option C: 

Option D: 

waecmaths solution: 

$\begin{align}  & -7<4x+9\le 13 \\ & -7-9<4x\le 13-9 \\ & -16<4x\le 4 \\ & -4<x\le 1 \\\end{align}$option B

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