I think it is 0.05 but i do if it is right your welcome if it is wrong I'm sorry
B. y=4/5x its just taking half
This is an exponential growth problem. Exponential growth can be expressed mathematically in the following way:

.
Parameter a presents initial amount.
Parameter r is percentage increase.
Parameter t is time.
An equation that would describe given problem is:

t is the time in years.
I attached the graph of this function.
Answer; there is literally no solution. it has to be a negative number.
Answer:
The answer is 3rd option.
Step-by-step explanation:
In a graph, domain is always represented by the x-axis. So by looking at the graph, the minimum value of x is -2. We can know that x ≥ -2.