TThis is Exam 1. The exam is 20 multiple choice questions an…

TThis is Exam 1. The exam is 20 multiple choice questions and 2 multiple answer questions. Each question is worth 5 points. You will have 60 minutes to complete the exam. You must submit the exam to receive a grade.Your allowed materials for this exam are: 1) The periodic table with equations that is posted with Question 1 on the exam.2) A scientific calculator. You may use your own personal calculator or the calculator within Honorlock.3) Scratch paper for your work.You may NOT use your textbook or any notes during the exam.Good luck!

2. A system is defined by, 2x + y – z = 4 -x + 3y +2z = 7 3x…

2. A system is defined by, 2x + y – z = 4 -x + 3y +2z = 7 3x – 2y + z = 1 Determine the inverse of the coefficient matrix and write on paper (use MATLAB or Octave or calculator). Use the inverse matrix method to solve the system (use MATLAB/Octave). Submit the solutions here. , , Determine how much b3 must be increased or decreased to decrease the value of y (from part b) by 2. Show step by step work on paper. Submit the answer here Using the new value of b3 solve the system (use MATLAB/Octave). Submit your answer. , ,