I'm not sure if the one I did is correct, but can anyone help me with formulas, explanations, etc?

Calculate the future value, if you invest $500 each month for 40 years Payment Monthly Compounding Annually 5 FV 6 Years 7Annual Interest 40 8.00% $500 PMT Nominal FV 1 Function 3 Calculate your monthly payment, assuming you have $10,000 on your credit card and you want to pay it off in 10 years 4 Payment Monthly 5 Compounding Monthly (365) 6 PV $10,000 8 Years 9 Annual Interest 0 PMT 10 25.00% 120 0.020833333 2 Function PMT $227.49 4 Calculate your monthly payment, assuming you have $10,000 on your credit card and you want to pay it off in 10 years 5 Payment Monthly Compounding Daily (365) 7 PV $10,000 9 Years 0 Annual Interest 1 PMT 2 3 10 25.00% Effect (Daily Comp.) Nominal (Monthly Comp.) PMT 5 Formula 7