Use formulas and not Excell please, step by step!

I just wanna know how to do it, and what kind of formulas use.

Ucu. De sure 18 SHUW ALL YOUR WORK. No credit will be given for answers that do not provide specifically how the response was obtained. Good luck. 1. (1 pt) A manufacturing firm needs to buy just one new lathe. The firm has 3 different manufacturers from which to choose. Which of the 3 mutually exclusive options is the best? MARR 16 99 B IC 10K 12K OB-A 15K AB 2.5K 2.7K . - 2k SV IK 2K ) 1 0.2 Life 8 years 8 years IRR 18.6% 16% 2.5K 0 - 8years2 0.2 nynondo 1.2 = -26 +0.2 (PIA, 97., 7) +(1.2 (P/F,9%,8) = -24 + 1.0066+ 6 642 = 5.648 2. (1 pt) A company is considerin DUVIUau only one sign change 2. (1 pt) A company is considering a project with the following cash flow. The external interest rate is 8% and MARR is 10%. Is this a good investment based on rate of return analysis? (Hint: Assume investment scenario) Year CF -2K 3KO PCF/PM, ) -33 -2K 17.3= 13 i PW: -2 +3 (PF, ) -2(PF, 82,3) - -2 + 7777 - 1.5876 = -0.8099 No this does not have a good investment (Bonus, 0.5 pt) Four alternative systems have been identified. MARR is 8%. The first step of AROR analysis is B and we determine that ARORce = 7.5%. ABCD 1/C 6K 3K EK SK AB 1.02K 0.53K 0.62K 0.71K a) Which alternative should be selected after this step? b) What is the next step? C D- b ) A-C als CD-B A-B