Luther is having his birthday party at the Galactic Fun party venue this year. The Blastoff party package costs $215 and covers the entrance fee for guests, a private party room, and
model rocket painting. Luther's parents upgraded his package to include a favor for each of
his 9 guests, bringing the total to $269. What is the cost of each favor?

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?