Answer:
$81,269.53
Explanation:
Lets use the compound interest formula provided to solve this:

P = initial balance
r = interest rate (decimal)
n = number of times compounded annually
t = time
First, change 3.4% into a decimal:
3.4% ->
-> 0.034
Since the interest is compounded quarterly, we will use 4 for n. Lets plug in the values now:


After 11 years, you will have $81,269.53