Directions: Complete each of the Graded Problems below by showing all your work in the space provided. Answers without justication will not be accepted. The rec ommended problems are optional but highly encouraged. You do not need to hand in your solutions to these problems. Recommended Problems: 0 Section 1.6: 1, 3, 714, 25, 41, 45, 47, 57, 61 0 Section 1.7: 7, 9, 17, 29, 34, 37, 39, 49, 78 0 Section 2.1: 3, 5, 17, 19, 21, 25, 29, 33, 39, 41, 45, 61, 63, 107 Graded Problems: 1. Solve the double inequality below. Then graph the solution set on the real number line. 81+3(a:2)