Answer:
-42 ft
Step-by-step explanation:
I think your question missed the key information so allow me to attach the photo below which may be fit with your question.
Here is my answer:
At first he were at: -55ft
Then, he traveled up 13 feet
So his new depth = -55+13 = -42 ft
Answer:
Step-by-step explanation:
Given:
Initial distance, Di = - 55
Travelled distance, Dt = 13 ft
Final distance, Df = Di + Dt
= -55 + 13
= -42 ft
New depth = -42 ft.