I suck at this math stuff lol

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?

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)