The situation you've described involves an exponential decay of the cell phone's value. Given the equation \( v(t) = 700(0.76)^t \), we can interpret the behavior of the value \( v \) over time \( t \).
In this case, as \( t \) (the number of years since the phone's release date) increases, the value \( v(t) \) will decrease because the base of the exponent (0.76) is less than 1. This indicates that the value is decreasing over time.
The key characteristic of exponential decay is that it decreases quickly at the beginning and then more slowly as time goes on. This means that a significant portion of the value is lost in the first few years, and then as time continues, the value diminishes at a slower rate.
Given the options, the correct interpretation of the graph is:
As t increases, v decreases quickly at first and then slowly.