Answer:
 2.73%
Step-by-step explanation:
You want the APY of an account earning 2.7% interest compounded quarterly.
The annual percentage yield is found using the formula ...
 APY = (1 +r/n)^n -1
where r is the annual interest rate compounded n times per year.
 APY = (1 +0.027/4)^4 -1 ≈ 0.027274 ≈ 2.73%
The APY of the savings account is about 2.73%.