Find the value of 2x + y=4 and y=3

Which ahows the graph of the solution set of 6x+4y< 12

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points

3questions show how you solved the problem 1. subtract & simplify (–y2 – 4y – 8) – (–4y2 – 6y + 3) 2.multiply and simplify 2x2y3z2 · 4xy4x2 3.multiply and simplify (x – 4) (x2 – 5x – 6)