Question

a submarine started at 750 meters below sea level. it rose 50 meters per hour over a 4 - hour period. which expression represents the new position of the submarine in relation to sea level? (-750 + 4)×50 -750 - 4×50 -750 + 4×50 750 + 4×(-50)

Explanation:

Step1: Define initial position

The submarine starts at 750 meters below sea - level, which can be represented as - 750.

Step2: Calculate the rise

It rises 50 meters per hour for 4 hours. The total rise is \(4\times50\).

Step3: Find the new position

The new position is the initial position plus the rise, so the expression is \(-750 + 4\times50\).

Answer:

The correct expression is \(-750+4\times50\) (assuming the options were meant to be written more clearly and this is the equivalent correct one among them based on the problem - solving steps).