6) Marie invested $35,000 today in an account that pays 4% annual compound interest. She wants to know how long it will take for her investment to grow to $70,000. She will not be depositing or withdrawing any money over the investment time horizon. Find time period (nper). Iime Value of Money Problems Directions: Please complete the following problems. You can use the formula approach or Microsoft Excel. However, make sure to show all of your work. For instance, if you choose to write down your answers on paper, write down the formula and the inputs you used