Need help with two questions regarding Present Value and Future Value

Hello everybody.

I have a math review due in two days. I've been able to struggle through most of it, but I absolutely cannto remember how to do these two questions. Any help that can be offered would be appreciated.

1) Pavendeep bought a hot tub by financing $4800 through Wet Coast Spas at 15%/a compounded monthly. He agrees to make monthly payments of$220 until it is paid in full.

What is the total cost of buying the hot tub?

2) Monique is saving for a new car. She wants to have enoguh money for a $10 000 down payment. She plans to deposit$450 at the end of each month into an account that pays 8%/a compunded monthly.

Monique buys the new car she wants. After making the down payment, she still owes \$18 350. Determine her monthly car payments if she finances this amount at 4.8%/a compunded monthly.

Also note, I am not looking for the answers, I need to go where to start and where to go. I believe I am supposed ot use the formulas for Future Value and Present Value.