A bank pays 7% interest on 3- year certificates of deposit. What is the value of a $500 certificate after one year? Give your answer to the nearest cent.

How do you solve a question like this?

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?

The weight of a full steel bead tire is approximately 800 grams, while a fighter wheel weighs only 700 grams. what is the weight of each tire in pounds?