Now, we already know that this first one evaluates to 4.5, so that one is 4.5. Now what's this one going to be? We have a triangle whose base is length six, height is four, six times four is 24, times 1.5 is going to get us 12. So this is going to be, that over there is 12, and then finally, what is this area? Oh, and we have to be careful. This is below the t-axis and above the graph, so this is going to be a negative 12, and then finally we have this area, which is once again going to be a positive area, it's below the graph and above the t-axis, and so let's see, two times four is eight, times 1.5 is four, so we're going to have plus four. Plus four, and so what do we have?