A running cheetah begins to slow down. For each meter the cheetah travels, its speed changes by −3.4 kilometers per hour. The cheetah travels a total of 21.5 meters.
What is the total change in the cheetah's speed during this time?
Drag and drop the correct answer into the box.
73.1.
71.9.
-71.9.
-73.1.
