After being exposed to an incredible shrinking machine, Halley's height decreased by 108 cm over 6 seconds. Her height decreased by the same amount each second. How much did Halley's height change each second?
To find how much Halley's height changed each second, divide the total height decrease by the number of seconds: 108 cm / 6 seconds = <<108/6=18>>18 cm/second. Answer: \boxed{18}.
To find out how much Halley's height changed each second, we can divide the total height decrease by the number of seconds:
Height change per second = Total height decrease / Number of seconds
In this case, the total height decrease is 108 cm and the number of seconds is 6.
Height change per second = 108 cm / 6 seconds
Calculating this, we find:
Height change per second = 18 cm
Therefore, Halley's height changed by 18 cm each second.