Find the length of side x in simplest radical form with a rational denominator

Alaptop computer is purchased for $1350 . after each year, the resale value decreases by 30% . what will the resale value be after 5 years?

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?