I just need help solving these problems step by stepSolve the inequality

I just need help solving these problems step by stepSolve the inequality. |2x + 1| − 5 < 0
Solve the inequality. |x + 3| ≥ |6x + 9|

Find the y coordinate of the vertex of the quadratic function f (x) = -2×2 – 4x + 5

Solve for y: x = 3 – (2/1 – y) or 3 minus 2 which is divided by 1 – y.

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