I need help with 2 math problems. View screenshot below for problems.

Math116-Spring 2021 > Assessment QUiZ7 (3.1, 3.2) G 55mins > ' B10pts '01 Details SHOW YOUR WORK Don't forget that all of your work should be shown neatly using all of the guidelines provided up to this point in this course. El You will need to upload your work for this quiz, so please show your work neatly DURING the quiz. 6 Write the augmented matrix of the system and use it to solve the system. :c 211 2z= 9 z y 5:: 4 m y 6z 4 Question Help: 8 Message instructor > Next Question ' Math116-Spring 2021 > Assessment QUiZ7 (3.1, 3.2) 'G 55mins X Progress saved Q W' 50 points possible 0/6 answered 0 Question4 v l l 1. Give your answer in interval notation. Question Help: 8 Message instructor ) Next