Fredo deposits $75 a year in an account earning 3% interest compounded annual. if he deposits $75 a year and does not make any withdrawals, how much interest will the account earn in the fourth year?

Total = principal * (1+rate)^years

Total = 75 * (1.03)^4 = 84.41 = 9.41 Interest
Total = 75 * (1.03)^3 = 81.95 = 6.95 Interest
Total = 75 * (1.03)^2 = 79.57 = 4.57 Interest
Total = 75 * (1.03)^1 = 77.25 = 2.25 Interest

Four Years of Interest = $23.18