On the coordinate plane, mark all points (x, y) such that (A) y=x+3, (B) y=-x+3, (C) y=|x|+3

What value of x is in the solution set of –5x – 15 > 10 + 20x?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Plz 20 points polynomials 1: subtract and simplify (–y^2 – 4y – 8) – (–4y^2 – 6y + 3) 2: multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2 3: multiply and simplify (x – 4) (x2 – 5x – 6)