please show equations to IRR, NPV, MIRRI and cash payback period on excel document

CHAPTER CASE Rullock Gold Mining en Bulloc Sevaluating a new gold mine in s Dorty, the como malysis of the mine mine would be productive lack, the owner of Bullock Gold Mining, is ng a new gold mine in South Dakota. Dan he company's geologist, has just finished hie of the mine site. He has estimated that the ld be productive for eight years, after which would be completely mined. Dan has taken an ate of the gold deposits to Alma Garrett, the com- francial officer. Alma has been asked by Seth om an analysis of the new mine and present her mendation on whether the company should Alma has used the estimates provided by Dan to determine the revenues that could be expected from the mine. She also has projected the expense of open- Ing the mine and the annual operating expenses. If the company opens the mine, it will cost $625 million today, and it will have a cash outflow of $90 million nine years from today in costs associated with closing the mine and reclaiming the area surrounding it. The expected cash flows each year from the mine are shown in the nearby table. Bullock Gold Mining has a 12 percent required re- turn on all of its gold mines. pany's financial officer. Alma open the new mine. Year Cash Flow --$625,000,000 70,000,000 129,000,000 183,000,000 235,000,000 210,000,000 164,000,000 108,000,000 86,000,000 - 90,000,000 QUESTIONS construct a spreadsheet to calculate the payback3 internal rate of return, modified internal Fate of return, and net present value of the pro- . Bonus question: Most spreadsheets do not have a built-in formula to calculate the payback period Write a VBA script that calculates the payback pe- riod for a project posed mine. Based on your analysis, should the company open the mine