A white counter was taken from a bag of different colored counters, and then put back in the bag. The relative frequency of getting a white counter was found to be 0.3. If the bag contained 20 counters, estimate the number of white counters.

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?