Which unit would you use to measure the height of a birds

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

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

Use circumcenter theorem to solve for the given values