Answer:
Decreasing
8106.97
Step-by-step explanation:
The formula for exponential growth or decay is
f(t) = a (1-r)^t
If (1-r) is less than 1, then the model will decrease, or decay, exponentially. If it's greater than one, it will increase, or grow, exponentially.
For the second part, you plug in 7 to x, and you get 8105.97.
Also, you can automatically cross out the first two answers in part 2 because you know the value decreases.
