Based on the distance that Jill is above sea level, and the distance of the whale, the difference in elevation is 1.35 km.
Jill's elevation relative to sea level is:
= +5/4 km
The whale's elevation relative to sea level is:
= - 0.1 km
The difference is therefore:
= 5/4 - (-0.1)
= 1.25 + 0.1
= 1.35 km
Find out more on elevation relative to sea level at https://brainly.com/question/10843282
#SPJ1