Find the measure of b

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

(x-5)1/2+5=2 what is a possible solution?

Write as a product: ac^2–ad+c^3–cd–bc^2+bd