I am having trouble with the steps. I am not sure which formula to use.

7. [5+2+3=10pts] Susan Carver will purchase a home for $350,000. She will use a down payment of $50 000 and finance the remaining portion at 6% compounded monthly for 30 years. a. What will be the monthly payment? b. How much will remain on the loan after making payments for 12 years? C. How much interest will be paid on the total amount of the loan over the course of 30 years