53. (Adapted from Terence Blows, Northern Arizona University.) Classify the following growth and decay scenarios as linear (arithmetic), exponential (geometric), or neither.
The amount of caffeine in the bloodstream decreases by 10% every hour.
The amount of trash in a landfill increases by 350 tons per week.
The amount of alcohol in the bloodstream decreases by 10 grams (the amount in a standard drink) per hour.