The mean test score in Miss Smith’s 4th grade class was 73, with a standard deviation of 4. Assume the grades are normally distributed and use the Empirical Rule (68-95-99.7) to find the approximate percentage of students who scored above 81.

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?