Item purchased: Rototiller for $899\mathrm{.}99.$ Tax $7\%.12$ month plan, interest will be charged if account becomes $60$ days past due. Rate of interest $27\mathrm{.}99\%.$ What is the total amount you will pay if you do not pay the loan within the term and meet all the conditions of the loan? Assume that the loan is compounding monthly. First, you need to calculate the payment; so$,$ what is TVM variable: the number of periods N$?$