need help

Q9 Raymond borrowed $3,000.00 trom Loans R US Company. The line of credit agreement provided for repayment of the loan in equal monthly payments of $668.76 which includes interest of 9.00% per annum calculated on the unpaid halance a. What is the monthly rate of interest? = 9%/12=0.75% b. Calculate the outstanding Ioan balance at the end of the third payment c. What are the total interest charges