B)The initial number of subscribers.
The given equation is:
We can compare this equation with the general model of exponential growth/decay:
Here A represents the initial amount, r represents the rate of decay and t represents the time in years.
Comparing both equations, we can see that 42,000 represents the Initial Quantity which in this case is the initial number of subscribers.
So option B gives us the correct answer.
question is incomplete.
he sells x mount because thats eqivilqant to the maz and then divided into quarters