All questions are from Penney, Linear Algebra, 4th edition. For each question that's more than just a calculation, justify your reasoning in complete sentences. Please staple your work and label each problem clearly. Each problem is worth 5 points.
True or False questions 1.14 and 1.15.
Exercises 1.55(e), 1.55(h), and 1.57.
Pick another exercise from section 1.2 that looks interesting, and do it.