Question 13

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Jambmaths question: 

Find the range of value of x satisfying the inequalities $5+x\le 8$ and $13+x\ge 7$

Option A: 

$-3\le x\le 3$

Option B: 

$-3\le x\le 6$

Option C: 

$-6\le x\le 3$

Option D: 

$-6\le x\le -3$

Jamb Maths Solution: 

$\begin{align}  & 5+x\le 8 \\ & x\le 3 \\ & \text{Also } \\ & 13+x\ge 7 \\ & x\ge -6 \\ & \text{The range is}-6\le x\le 3 \\\end{align}$

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