Note that you need to study Lesson 1 (Systems of Linear Equations) and Lesson 2 (Row-Reduction and Linear Systems) from my Linear Algebra & Vector Geometry book to prepare for this assignment.
Question 1
Testing your knowledge of RREF and REF matrices as taught right at the start of Lesson 2 in my book.
Note that part (f) is quite similar to my question 11 in Lesson 2.
Question 2
Classic Gauss-Jordan elimination problem. Like my question 3 in Lesson 2.