Please help me with the correct excel function formula

I understand how to do it manually, but I don't understand excel

Only excel formula, please. For example = Rate(D8-D9 ,,D6,D7)

FILE HOME INSERT PAGE LAYOUT FORMULAS DATA REVIEW VIEW Sign In Arlal 12 " A" A" Paste BIU. - - A . Alignment Number Conditional Format as Cell Cells Editing Formatting . Table. Styles . Cipboard Fort IF Styles 04 X v A B C D E F G H At 7.3 percent interest, how long does it take to double your money? To quadruple it? Complete the following analysis. Do not hard code values in your calculations. Present value Years Interest rate Future value 1.00 7.30% $ 2.00 10 1.00 7.30% $ 4.00 14 Sheet1 READY 100%% Attempt(s) 1/3 Hint Step: Use the NPER function to calculate the number of periods