Answer:
   A = 6.13e^(0.00884769t)
Step-by-step explanation:
The exponential growth model can be written two ways. Comparing them, we can find the value of k.
 A = 6.13×(7.00/6.13)^(t/(2015-2000)) = 6.13×e^(kt)
Dividing by 6.13 and taking natural logs, we get ...
 t/15×ln(7.00/6.13) = kt
 k = ln(7.00/6.13)/15 . . . . . divide by t
 k ≈ 0.00884769
Then the exponential growth function can be written as ...
 A = 6.13e^(0.00884769t)