A scientist uses a submarine to study ocean life. She begins at sea level, which is an elevation of o feet. She travels down 98.8 feet. She then rises 63.5 feet. Next, she descends a second time, 32.1 feet. How many feet must she now rise to get back to sea level? Answer: feet

Initial Descent: First, let's consider the initial descent of the submarine. The scientist starts at sea level and descends 98.8 feet.First Ascent: Next, the scientist ascends 63.5 feet. To find the new depth, we subtract the ascent from the initial descent. 98.8 feet - 63.5 feet = 35.3 feet The scientist is now 35.3 feet below sea level.Second Descent: Then, the scientist descends another 32.1 feet. We add this descent to the current depth to find the new depth. 35.3 feet + 32.1 feet = 67.4 feet The scientist is now 67.4 feet below sea level.Return to Sea Level: Finally, to determine how many feet the scientist must rise to get back to sea level, we consider the current depth below sea level. The scientist must rise 67.4 feet to return to sea level.

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A scientist uses a submarine to study ocean life.

She begins at sea level, which is an elevation of o feet.
She travels down 98.8 feet.
She then rises 63.5 feet.
Next, she descends a second time, 32.1 feet.

How many feet must she now rise to get back to sea level?
Answer: feet

A scientist uses a submarine to study ocean life. $\newline$ - She begins at sea level, which is an elevation of o feet. $\newline$ - She travels down $98$ . $8$ feet. $\newline$ - She then rises $63$ . $5$ feet. $\newline$ - Next, she descends a second time, $32$ . $1$ feet. $\newline$ How many feet must she now rise to get back to sea level? $\newline$ Answer: $\square$ feet

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Q. A scientist uses a submarine to study ocean life.

\newline

- She begins at sea level, which is an elevation of o feet.

\newline

- She travels down

98

8

feet.

\newline

- She then rises

63

5

feet.

\newline

- Next, she descends a second time,

32

1

feet.

\newline

How many feet must she now rise to get back to sea level?

\newline

Answer:

\square

feet

Initial Descent: First, let's consider the initial descent of the submarine. The scientist starts at sea level and descends $98.8$ feet.
First Ascent: Next, the scientist ascends $63.5$ feet. $\newline$ To find the new depth, we subtract the ascent from the initial descent. $\newline$ $98.8$ feet $-$ $63.5$ feet $=$ $35.3$ feet $\newline$ The scientist is now $35.3$ feet below sea level.
Second Descent: Then, the scientist descends another $32.1$ feet. $\newline$ We add this descent to the current depth to find the new depth. $\newline$ $35.3$ feet + $32.1$ feet = $67.4$ feet $\newline$ The scientist is now $67.4$ feet below sea level.
Return to Sea Level: Finally, to determine how many feet the scientist must rise to get back to sea level, we consider the current depth below sea level. $\newline$ The scientist must rise $67.4$ feet to return to sea level.