Answer:
feet : Shark is 72 feet below sea level.
Step-by-step explanation:
Let x represent depth of the shark.
We have been given that the submarine’s depth was twice the depth of the shark. This means that depth of submarine would be
.
We have been given that a submarine was 144 feet below sea level, so submarine's elevation would be
.We can represent this information in an equation as:

To find shark's position, we need to solve for x.


Therefore,
feet represents shark's elevation, which represents that shark is 72 feet below sea level.
12.5 x10^7
To multiply by 10^7, move the decimal 7 place values to the right and fill in with all necessary zeros.
Final answer: 125,000,000
Is there more to this question?
Answer:
first one
Step-by-step explanation:
same x value can't have more than one y value