We are given that:
, so if we want to find out what t satisfies this, we have to square all of the compound inequality, giving us:

So, the integers on this interval are clearly just 5,6,7,8,9,10,11 and 12. That means there are 8 integer values of t that fits the new inequality, so there are 8 roots of t that give us a value between 2 and 3.5