using compound interest, how long does it take to double a 1000 dollar investment that pays 6.5% annual interest, compounded monthly?

Asphere has a diameter of 10 in. what is the volume of the sphere?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

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?