$2,310.
To convert percent to decimal, you move the ( . ) two, to the left so 11% is 0.11.
1,100 * 0.11=121. 121 is the money that will be put in annually (which means every year unless specified otherwise)
121 * 10=1,210. This is how much interest will be after 10 years.
1,100 + 1,210= 2,310
