Answer: The initial amount in the account = $3600
Explanation:
Since we have given that
The amount of money in a savings account after t years is represented by the function

As we know the formula "Compound Interest" :

So, According to our question,
Rate of interest = 0.35 = 35%
So, equate the both the equations , we get that
Hence, The initial amount in the account = $3600