Question

A diver is descending to reach the bottom of a lake. After 15 seconds, she is 90 feet below the surface of the water. If positive integers represent a distance above the surface of the lake, which integer best represents the diver’s change in position in feet per second?

Answer 1

dive distance traveled by time

90 feet / 15 seconds = 6

since the diver is below the surface they are changing position at -6 feet per second