Please assits

2.1 What is the optimal solution? 2.2 Is the solution unique? Why? 23 For bolts manufactured from the scrap obtained from rm A, determine the range of prot contribution for which the solution in part [2.1] remains optimal. 2.4 What are the shadow prices associated with the optimal solution in [4.1]? 2.5 Give a range for sales limitation (constraint) on nuts such that the shadow prices in [2.4] remain