Help me with this please! Will mark Brainliest!!

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

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

Sketch one cycle if the cosine function y=2cos2theta