A sea lion dove from the water's surface at sea level to an altitude of −216.12 meters in 2.4 minutes. What is the average change in the sea lion's altitude per minute? Enter the your answer in the box as a decimal.
reduce the numbers by dividing both by 2.4 to get the distance traveled per min which is 90.05 meters a min, so every min its altitude decreases by 90.05 meters
