The number of subscriptions is given by (n^2 -n+1)^(1/2), correct? Where n is the number of months. So, we plug in the given months, 12, into the equation and get (144 - 11)^(1/2)= 11.5325626. However, we need to multiply this number by 1000 because our answer is in thousands. The answer is 11532.5626. Round this to the nearest hundreds and we get 11500 subscriptions per month.