A scientist uses a submarine to study ocean life. She begins at sea level, which is an elevation of o feet. She travels down 21.1 feet. She then rises 7.4 feet. Next, she descends a second time, 47.6 feet. How many feet must she now ascend to get back to sea level? Answer: feet

Calculate Total Descent: Determine the total descent by adding the two descents. First descent: 21.1 feet Second descent: 47.6 feet Total descent = 21.1 feet + 47.6 feet Calculation: 21.1 + 47.6 = 68.7 feetFind Net Descent: Subtract the ascent from the total descent to find the net descent. Total descent from Step 1: 68.7 feet Ascent: 7.4 feet Net descent = Total descent - Ascent Calculation: 68.7 - 7.4 = 61.3 feetDetermine Required Ascent: Determine the amount she must ascend to return to sea level. Since the scientist is currently at a net descent of 61.3 feet below sea level, she must ascend exactly that amount to return to sea level. Calculation: The scientist must ascend 61.3 feet.

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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 21.1 feet.
She then rises 7.4 feet.
Next, she descends a second time, 47.6 feet.

How many feet must she now ascend 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 $21$ . $1$ feet. $\newline$ - She then rises $7$ . $4$ feet. $\newline$ - Next, she descends a second time, $47$ . $6$ feet. $\newline$ How many feet must she now ascend 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

21

1

feet.

\newline

- She then rises

7

4

feet.

\newline

- Next, she descends a second time,

47

6

feet.

\newline

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

\newline

Answer:

\square

feet

Calculate Total Descent: Determine the total descent by adding the two descents. $\newline$ First descent: $21.1$ feet $\newline$ Second descent: $47.6$ feet $\newline$ Total descent = $21.1$ feet + $47.6$ feet $\newline$ Calculation: $21.1 + 47.6 = 68.7$ feet
Find Net Descent: Subtract the ascent from the total descent to find the net descent. $\newline$ Total descent from Step $1$ : $68.7$ feet $\newline$ Ascent: $7.4$ feet $\newline$ Net descent = Total descent - Ascent $\newline$ Calculation: $68.7 - 7.4 = 61.3$ feet
Determine Required Ascent: Determine the amount she must ascend to return to sea level. $\newline$ Since the scientist is currently at a net descent of $61.3$ feet below sea level, she must ascend exactly that amount to return to sea level. $\newline$ Calculation: The scientist must ascend $61.3$ feet.