The most famous application of exponential decay has to do with the behavior of radioactive materials. - As x increases by 1 each y-value is one-seventh of the previous y-value. Exponential decay is common in physical processes such as radioactive decay cooling in a draft ie by forced convection and so on.
Exponential growth is a process that increases quantity over time.
The function is a stretch of the function fx 13x. It can be expressed by the formula ya 1-bx wherein y is the final amount a is the original amount b is the decay factor and x is the amount of time that has passed. Exponential decay is a scalar multiple of the exponential distribution ie. The function shows exponential decay.