Plz help!! i believe it's a but i'm not 100% sure

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?

Find the distance between (7,-6) and (-3,-9)

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities