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8
This graph shows how the total distance Jack has walked depends on the number of trips he has made to school.
Total kilometers Jack has walked
2042
9 8
N
Total distance walked (kilometers)
N
1
х
8
9 10
0 1 2 3 5 6 7
Number of trips
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What is the slope of a line that is perpendicular to y = 3x + 1

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?

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