Someone help and show how you got it plz

Which expressions are equivalent to -6 + 3m

Based on the diagram, match the trigonometric ratios with the corresponding ratios of the sides of the triangle. tiles : cosb sinb tanb sincposs matches: c/b b/a b/c c/a

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14