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Verified Answer :

Answer is 2263.
Checkpoint 1 is -86 
Checkpoint 4 is 2177
Subtract -86 from 2177....2177-(-86)
   =2263
2263 is how much higher checkpoint 1 (-86) is from checkpoint 4 (2177)

Hope this helps! :)

hiiamshyan

2177- -86=2263
turn the subtraction in to add and the negative into positive then add both numbers

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