Each function below describes how something changes. Use the description to determine which function(s) describe exponential growth or decay. a. The thickness of ice increases by thirty millimeters each day.
b. The volume of a sphere doubles every minute.
c. The population decreases by 8 % each year.
d. The power of a turbine is proportional to the square of wind speed.
e. The pollution increases at a rate of 10 grams per day.