If c & d=c2+d2-4, then 2 & 1 = ?

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

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

Write 37/22 as a decimal rounded to the nearest hundredth.