justify the type of capitalization used in each problem. If one or more of these cases were intersessionally, assume policy I (remember to graph too)

One person bought a car for $ 1,500,000 and agreed to pay for it in 36 equal monthly installments, beginning one month after the purchase. The contract also stipulates that the buyer must pay in the month of December of each year annuities equivalent to three monthly payments. If the car was purchased on January 1 of year 1, you will have to pay, in December of years 1, 2 and 3, four monthly payments in each period (one normal plus the annuity). If the interest charged is 1% per month, how many will the monthly payments be?