help me solve it

l. Consider the following optimal tableau. where 5. and S; are slack variables added to the original problem: What is the range of optimality for the contribution rate of the variable Xi? How much would you be willing to pay for one more unit of the first resource, which' as represented by slack variable 51? What' is the value of one more unit of the second resource? Why? What would the optimal solution be if the prot on K; were changed to RMIE instead ofRMlD? How much would the maninntm profit change? How much could the right-hand side in constraint number 2 be decreased before prot would he a'ected