I have the answer but would like to know how to solve either one of these withing Excel!

or (Present value tables are required.) Calby Enterprises is evaluating the purchase of a new computer network system. The new system would cost $25,000 and have a useful life of 6 years. At the end of the system's life, it would have a residual value of $3,000. Annual operating cost savings from the new system would be $8,800 per year for each of the six years of its life. Calby Enterprises has a minimum required rate of return of 12% on all new projects. The net present value of the new network system would be closest to NPV -25 000 $11,177. 8800 -> bluoneToboM OB. $12,698 bethelsa od bluorta leboM A8 aT Oc. $9,656. desntleigso tnasb to vtaltev e prusuteve el ynegmcs A 0ng ano seoorlo vino belimi OD. $37,698. bcrtten onuepbud yasordoo erl Bhuow Isrw (Present value tables are required.) Currence Corporation is considering the purchase of a special blow - molding machine that would cost $59,752 and would have a useful life of 8 years. The machine would generate $11,200 of net annual cash inflows per year for each of the 8 years of its life. The internal rate of return on the machine would be closest to bortem mun to utes prinutaoA OA 10%. toritorn oudve9 . 14%. Oc. 8%. airt ni ovig pnied meX test ertt ai airT pgnuo niaees air 12%