I need help with all three as im unsure if they're correct and I'm struggling with the equation

\#8. You deposit $5,000 at the end of every year for 10 years. Assume you are earning 8.88% per year for the entire problem. After ten years of making such deposits, you just keep the money in your bank-still earning 8.88% per year. How many years (after making your last deposit) would it take for your money to grow to $534,480 ? n=101y=8.88 CPtfU=75530.95=PV n=23 \#9. You have just started making monthly payments of $948.32 on a $120,000 mortgage with an interest rate of 8.8% and a 30 year life. Assume that you have decided to add another $200 to this required payment on this mortgage. In how many years will this mortgage be paid off? In terest =221,398.44 16.6 years 948.32 10. Assume that you borrowed $5,500. Payments are made weekly at the rate of $40.55 per week over a period of 3 years. What is the annual interest rate on this loan