The answer must be in the form of a function... thank you in advance!

XI 5s Calculating the number of periods - Excel ? 4 FILE HOME INSERT PAGE LAYOUT FORMULAS DATA REVIEW VIEW Sign In 8 Calibri 11 A A % M Paste BIU- A Alignment Number Cells Editing 10 points Conditional Format as Cell Formatting Table Styles Styles Clipboard Font Skipped A1 B D E F G H eBook 1 Print 2 3 Solve for the unknown number of years in each of the following: References 4 5 Complete the following analysis. Do not hard code values in your calculations. 6 7 8 Years 9 10 Present value 560 $ 810 $ 18,400 21,500 Interest rate 6% $ 9% $ 11% $ 13% $ Future value 1,389 1,821 289,715 430,258 11 12 A 13 14