They can both be correct because if 0 is the turning point their answers are the same
Х - has Danny
2 - has Carly
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9 - have together
x + 2 = 9
x = 9 - 2
x = 7 - has Carly.
the first few bars are the people who walked fewer than 4,000, so add up the numbers on the side (2 and 5) and you get 7, so a
