Final answer:
The maximum rate the ARM could adjust to is 5.5%.
Step-by-step explanation:
To calculate the maximum rate the ARM could adjust to, we need to consider the caps for adjustment. The 2/1/6 caps mean that the rate can adjust by a maximum of 2% in the first adjustment period, 1% in subsequent adjustment periods, and 6% over the life of the loan.
So, if the initial rate is 3.5% and the LIBOR increases by 2%, the maximum rate the ARM could adjust to would be 3.5% + 2% (first adjustment cap) = 5.5%.