Answer :

.2 mi + 1.4 = her total hike
1.4
+ .2
____
1.6 mi
apologiabiology
assume sea level=0

she started at 0.2 below sea level or -0.2

the she hiked and ended at 1.4 above sea level

the distance between any 2 points is
point 1=x
point 2=y
|x-y|=distnace
|| is absolute value bars which basically makes everyghing inside positive
in equation
|-0.2-1.4|=|-1.6|=1.6

the distance is 1.6 miles

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