Help! I have been stuck at this for an hour and I still don't get it

Is a currency whose value is tied to another currency, meaning that the exchange is fixed

25 ! i need asap! ! ill mark brainliest!

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?