HELP WILL MARK BRANILY

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?

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is

What are the coordinates of the image of p for a dilation with center (0, 0) and scale factor 2