Graph the lines pls help ?

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

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3