no excel or python please

A farmer owns 200 pigs that consume at least 90lb of special feed daily. The feed is prepared as a mixture of corn and soybean meal with the following compositions: The dietary requirements of the pigs are 1. At most 1% calcium. 2. At least 30% protein. 3. At most 5% fiber. Formulate an LP to determine the daily minimum-cost feed mix and solve it using graphical solution procedure. Simplified version of the LP: minz=0.20x1+0,60x2s.t.9x1+8x210x27x13x1x2x1+x2x1,x2000900 a) Determine binding, nonbinding and redundant constraints. b) Determine the ranges for the cost of corn and soybean so that the current basis stay at the optimal. c) If the RHS value of the second constraint increases to 100 , will the optimal solution change? Calculate the shadow price and the new z-value