Amanda is 15 years old. she has two sisters, britney, who is 12 years old, and caitlin, who is the youngest. amanda’s age is equal to 3 times the difference of britney’s age and caitlin’s age. how old is caitlin?

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?