exam Maths Puzzle Numerical Ability

Solve the linear inequality. Other than [] use the interval notation to express the solution set and graph the solution set on a number line.

20x + 28 <4(4x+5)

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exam Other Question

solve the system by substitution

4x-4y=0
y=2x-5
Can you please help me factor 2t^2 - 19 - 6t =