Answer:
Option C
Step-by-step explanation:
40/10 simplifies to 4.
40/100 simplifies to 0.40.


Therefore:

Option C should the the correct answer.
Answer:
Step-by-step explanation:
Check attachment for solution
Answer:
1,200 +3(60)
Step-by-step explanation:
1200 is where they started so every three hour period the submarine rises 60 ft per hour. So you multiply it by this and then 60. Positive because you are rising, and not going down.
You subtract the known angle measurements from 180 because a straight line means the whole undivided angle is 180 degrees and the answer to the subtraction is your missing angle measurement
I hope this helps!!!