Please i need this ASAP, Step by Step Process

Finacial Alt using PW by hand and the Incremental Analysis use Excel please

6-13. The alternatives for an engineering pro- ject to recover most of the energy presently being lost in the primary cooling stage of a chemical processing system have been reduced to three designs. The estimated capital investment amounts and annual expense savings are as follows: Assume that the MARR is 12% per year, the study period is six years, and the market value is zero for all Design ER2 EOY ER1 ER3 - $98,600 25,800 -$115,000 29,000 0 1 2 3 ---$81,200 19,750 17 = 6%" G-$150 c 5 6 34,526 29,750 19,750 "After year one, the annual savings are estimated to increase at the rate of 6% per year. b After year one, the annual savings are estimated to increase $150 per year. Uniform sequence of annual savings. three designs. Apply an incremental analysis method to determine the preferred alternative. (6,4)