Question: A diver begins at sea level and descends at a rate of 12 meters per minute for 4 minutes. Then she ascends 18 meters, pauses, and descends another 9 meters. What is her final depth relative to sea level?
A) -33 meters
B) –21 meters
C) –39 meters
D) –15 meters
Correct answer: C
Grade: 6 | Topic: Number System | Difficulty: Medium | Standard: 6. NS. C. 5