Charlene has nine different necklaces, and she wears four at a time. how many different ways can charlene wear four necklaces?

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

This is about circle theorems. someone asap : (

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?