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)

Calculating the number of periods . Excel X FILE HOME INSERT PAGE LAYOUT FORMULAS DATA REVIEW VIEW Sign In Callbri - 11 - A A 98 H Bru- B- - A. Alignment Number Conditional Format as Cell Cells Editing Formatting " Table . Styles Fart A C G H K You're trying to save to buy a new $225,000 Ferrari. You have $45,000 today that can be invested at your bank. The bank pays 4.8 percent annual interest on its accounts, How long will it be before you have enough to buy the car? Future value $ 225,000 Present value $ 45,000 Interest rate 4.8% 10 11 Complete the following analysis. Do not hard code values in your calculations. 12 15 Number of years 14 15 16 17 Sheet1 RLADY + Attempt(s) Hint Calculating the interest rate - Excel 2 0 - 5 X FILE HOME INSERT PAGE LAYOUT FORMULAS DATA REVIEW VIEW Sign In X Callon - 11 - A" A Paste BIU- B- &- A - Alignment Number Conditional Format as Cell Cells Editing Formatting . Table - Styles - Clipboard Fort Style A1 X V A D E G H K Assume the total cost of a college education will be $320,000 when your child enters college in 18 years. You presently have $67,000 to invest. What annual rate of interest must you earn on your investment to cover the cost of your child's college education? Future value $ 320,000 Years 18 Present value $ 67,000 10 11 Complete the following analysis. Do not hard code values in your calculations. 12 13 Annual interest rate 14 15 16 17 Sheet1 + READY 100 Attempt(s) Hint