Answer: - 471 feets
Explanation:
Given the following :
Starting point = 115 feets below sea level
Total number of feet ascended = 320 feets
Total number of feets descended = 676 feets
115 feets below sea level = - 115 feets
Change in elevation:
Starting position + ascension - descent
-115 feets + 320 feets - 676 feets
= - 471 feets