exam Maths Puzzle Numerical Ability

draw and name a quadrilateral that is equilateral but not equiangular.

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exam Other Question

If f(x)={(3,5), (2,4), (1,7)} and h(x)= {(3,2), (4,3), (1,6)} then what is f(h(4))? I need to see how to solve 4(2n-5) = 3n +10
Thank you