exam Maths Puzzle Numerical Ability

Solve the inequality & write the solution set in interval notation:

2 < 4 + 2/5x < 8

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exam Other Question

if the first differences of a sequence are a constant -7 and the third term is 15, find the first 5 terms of the sequence Graph the function:
f(x)= -/x-1/ +2
** /= absoulute value