Estimates of the Treasury?

We really need your help to answer the following questions. Thank you very much! 3. It plans to start saving for the payment initial purchase of a home after completing his final year at school. You will start to work for one year from today and the plan to save $ 500 per month for 8 years (assuming you have savings at the end of each month) interest rate you can earn on your savings is 6% compounded monthly. How much hook can save you up after 8 years of saving? 4. What you're buying a new car. The car dealer announced one day-one sales price of $ 28,000 with a unit of compensation payment of $ 3,000 and $ 734.38 per month for 48 months. A. What is the interest rate charged by the dearler in the year of the loan Car-4? b. If the fair interest rate in the year car loan-4 is 9%, what is the real asking price of the car? Could you list the process of calculation? or formula? or PV =? PMT =? VF =? N =? R / I =?

To the first question, if you invest $ 500 per month for eight years with an annual return of 6 percent, is $ 48,324.65 at the end of eight years. To the second question, the interest rate is 18 percent. At 9 percent, can borrow $ 29510.90 for the payment itself, so including their $ 3,000 payment, which would allow for $ 32510.90.