1. A car loan of $9480 with interest rate 6% compounded monthly is repaid in 3 years with monthly payments of $288.40.
2. $2500 is deposited into a savings account paying 2.8% interest compounded semiannually and $1000 is added to the account at the end of each half year.
3. $1000 is deposited into a savings account paying 5.2% interest compounded weekly and $25 is added to the account at the end of each week?
Give a difference equation for yn, the balance after n interest periods.