Ifound a rock that contains 1g of radioactive radium (half-life = 1600 years). i measure that 15g is no longer radioactive. how old is my rock?

Nikita wants to apply for student aid to fund her college education. arrange the steps involved in nikita’s application for financial aid

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?

10x − 5y + 14 = 0 whats the answer pls