A submarine is underwater. It’s position is 645 feet below sea level. It rises In the water 100 feet and then descends 100 feet. What integer represents the change in the submarines postion in the water?

645 feet.

Step-by-step explanation:

I. Given plus is rise up and minus is goes down, when the submarine is underwater so

{submarine} = -645

{rise up} = +100 -645

           = -545

{go down} = -100 - 545

                 = -645 or 645 feet underwater

That makes -645 is the interger represents the charge of submarine position.

Hope that help :)

step-by-step explanation: