While exploring underwater caves , the depth meter on a scuba divers watch indicated that he was at feet . If he traveled up 13 feet , what would be his new depth

-42 ft

Step-by-step explanation:

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At first he were at: -55ft  

Then, he traveled up 13 feet

So his new depth = -55+13 = -42 ft

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.

step-by-step :