Answer:

Step-by-step explanation:
<u>Step 1: Find the square root of -1</u>
<u />


Answer: 
Answer
Find out the how long will it take the submarine to descend to the ocean floor
To proof
Formula

where d = distance traveled (or descended),
r = rate of travel , t = time
As given
A submarine descends at a rate of 2.6 kilometers per hour. If the ocean floor is 6.24 kilometers below sea level .
put all the values in the above formula


t = 2.4 hour
it take 2.4 hours the submarine to descend to the ocean floor .
Hence proved
The original price would be $72. Hope this is right, and helps you.
Answer:
Step-by-step explanation: