Which of the following describes exponential decay? A: The amount at a given time can be calculated by subtracting an amount from the previous amount.
B: The amount at a given time can be calculated by multiplying the previous amount by a value greater than 1.
C: The amount at a given time can be calculated by multiplying the previous amount by a value less than 1.
D: The amount at a given time can be calculated by adding an amount to the previous amount.