How to determine interest and payment sizes?

Question

Jennifer borrowed $3000 from the bank in order to buy a new jacuzzi. She will pay it off by equal payments at the end of each week for 4 years. The annual interest rate is 8.05%.

Determine the size of payments, and the total interest paid. 

Express your answers rounded to the nearest cent! 

Answer 1

The interest is $784.39. The formula I used is: c=p*(1+int)^(n-1)

compound

principal

interest=.0805

years