Math
posted by Taylor .
Which of the following statements describe an exponential relationship?
A. the temperature is increasing at the rate of 3 degrees per hour.
B. the number of bacteria is increaing at the rate of 30% per minute
C. The number of cars in the parking lot is decreasing at the rate of 5 cars per hour.
D. The price of houses in this neighborhood is increasing at the rate of $15,000 per year

Exponential relationships are dependent on the current population, A,B,D do not meet that criteria, do they?