I will give Branliest to the person who answers it correctly. Please look at the screenshots I took and answer the question the best you can.

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?

A10 inch cookie cake is divided into 8 slices. what is the area of 3 slices

Which angle of rotation is an angle of rotational symmetry for all figures?