Question #8c623

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Answer 1 · 2017-12-02T20:23:05

It levels out at $965$ $965$ feet below sea level.

First, let’s define below sea level as having a negative value.

So,

$150$ $150$ feet below sea level $\implies\quad-150$ feet

That’s the starting point. Since the sub descends $850$ feet, that’s going to be a negative value.

So the sub is currently at $-150-850$ feet, which is $-1000$ feet.

If it rises $35$ feet, that’s positive.

So the sub is now at $-1000+35$ feet, which is $-965$ feet.

$\therefore$ the sub levels out at $965$ feet below sea level.