3(12 – 9x) = -16x + 58 i need the justifiction for each step because idk how to do it

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

41/17 as a decimal rounded to the nearest hundredth

Victoria created the scatterplot below based on the data in the table for the ages and heights of some teachers in her school. she wants to see if a teachers heigh depends on his or her age. what did she do wrong when she created the scatterplot