How are 5/10,5/100 and 5/1000 how are they related

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Given the graphed function below which of the following orders pairs are found on the inverse function

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?