20$ each month. interest rate is 0.4% monthly or 4.8% annually. u1=20 un=20+(1.004)^u n-1 find the balance at the beginning of the…

20$ each month. interest rate is 0.4% monthly or 4.8% annually. u1=20 un=20+(1.004)^u n-1 find the balance at the beginning of the 5th month