A dolphin swimming in the ocean dove deeper,at a rate of -3 feet per second.What was the change in the dolphins elevation one minute later?

Question

It is about integers and I don't understand how to solve it.

Answer 1

The rate means that for each second, the dolphin swims 3 feet below the surface.

 

 

60 seconds = 1 minute

 

Multiply -3 by 60 to get the dolphins change one minute later.

 

The change is -180 feet.