okay guys so another question for user 8782 723 and also won't let me comment so if you see this question that's why I didn't comment back something's just wrong with my and also know I didn't copy it from a website I actually wrote it down because I had saw something about this before and I took a picture of it and it just did a lot of dots so that's why I did that ​

What is the vertex form of f(x) = x2 + 6x + 3

What is the reflection image of (5,-3) across the line y = -x?

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?