
David W. answered 12/29/17
Tutor
4.7
(90)
Experienced Prof
It is easy once you draw a picture:
1--- e. up 8 steps to the top
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9--- d. up 6 steps
10--- b up 3 steps
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13---a. middle
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15--- c. down 5 steps
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There is a middle with 12 steps above and 12 steps below. How many is that?