Which of the following situations can be modeled by an exponential function? * 1
The number of cars waiting in line at a car wash starts at 8 and increases by 2 cars
every 10 minutes.
2
The amount of water in a pool starts at 5000 gallons and drains at rate of 130 gallons
per minute.
3
The number of tadpoles in a pond starts at 240 and triples every hour.

4
The amount of sugar in a bin starts at 40 cups and decreases by 2/3 of a cup per
batch of brownies made.