So in order to complete writing this definite integral, I need to be able to write the upper bound. And the way to figure out the upper bound is by looking at our delta x. Because the way that we would figure out a delta x for this Riemann sum here, we would say that delta x is equal to the difference between our bounds divided by how many sections we want to divide it in, divided by n. So it's equal to b minus a, b minus a over n. Over n. And so you can pattern match here. If this is delta x is equal to b minus a over n, let me write this down. So this is going to be equal to b, b minus our a, which is two. All of that over n. So b minus two is equal to five, which would make b equal to seven. B is equal to seven.