Can you help me with these questions?

1.

Table 1. Sensitivity Report from maximizing profits via production of X1 and X2 subject to three constraints (C1, C2 & C3). 6 Variable Cells 7 Final Reduced Objective Allowable Allowable 8 Cell Name Value Cost Coefficient Increase Decrease $B$2 Activity Levels X1 3 4 16 4 10 $C$2 Activity Levels X2 5 0 4 1E+30 3.2 11 12 Constraints 13 Final Shadow Constraint Allowable Allowable 14 Cell Name Value Price R.H. Side Increase Decrease 15 $D$6 C1 LHS 13 0 20 1E+30 7 16 $D$7 C2 LHS 20 0.8 20 35 15 17 $D$8 C3 LHS 5 3.2 5 3.888888889 5