On which intervals is g increasing? Well at first you might say, well they don't even give us g. How do we figure out when g is increasing? Well, the answer is, all we need is g prime, which they do give us. And saying on which intervals is g increasing, that's equivalent to saying on which intervals is the first derivative with respect to x, on which intervals is that going to be greater than zero? If your rate of change with respect to x is greater than zero, if it's positive, then your function itself is going to be increasing. And so there's a couple of ways that we could approach this. You might just want to inspect kind of the structure of this expression and think about, well when is that going to be greater than zero?