I NEED help for like the millionth time. like i said thanks to everyone who is answering my questions. but click her please if u wanna help. take ur time also thier is no rush.

41/17 as a decimal rounded to the nearest hundredth

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?

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122