Concept explainers
A scuba diver went down 20 feet below the surface of the water. Then she dove down 3 more feet. Later, she rose 7 feet. What integer describes her depth?
The integer that describes the scuba diver’s depth.
Answer to Problem 42P
The depth is -16 ft.
Explanation of Solution
Given information: The scuba diver went down 20 ft below the surface of water. She drove down 3 feet more. Then she rose 7 ft.
Calculation:
The scuba diver went down 20 ft. She drove down 3 ft more.
Total depth now is
She rose 7 ft.
The depth now is
The integer that describes the depth = -16 ft.
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