The leader's dive watch shows that they descended 33 feet from their starting position. Their current position is now 48 feet below sea level, but there is no record of their starting depth.

Step-by-step explanation:

Given that:

So their starting depth mus be the gap between the two milestones mentioned above, we take:

48 - 33 = 15 feet.

So their starting depth is  15 feet below the sea.

Step-by-step explanation:

Given:

Delta D = 33 ft

Dfinal = 48 ft

Delta D = final distance- initial distance

Initial distance = 48 - 33

= 15 ft

= 15 ft below sea level.

2

step-by-step explanation:

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above