exam Maths Puzzle Numerical Ability

The length of a rectsngle is fixed at 14cm. What widths will make the perimeter greater than 86cm? the width must be bigger than ___?
Will someone help me with this I cannot do word problems at all!!!

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exam Other Question

Find the exact value of cot(-π/6).

Thanks
Solve the inequality, express the solution set in interval notation and graph it. Anyone know how to approach this one? Thanks!

5x-2 <7

5x-2 are surrounded by absolute value signs. Hope that is clear enough! Thanks