X=32 please post formulas and work used in excel!!

2. Bob Stahl, the distribution manager at Forbes Industries, is considering using error addback for his DRP system. To evaluate its use, he compiled data for three periods on a sample product, the Scarlet Tiara. The initial DRP record is given here: (Chapter 14) Q=80,LT=1,ss=10 a. Develop the DRP records above for periods two through four given demands of 3+X,5+X, and 2+X in periods one, two, and three. b. Complete the same records using the error addback method. What differences occur