So we could, actually let me just clear this out so we have more space. So this right over here is going to be equal to the integral, I'll do that in this purple color, the integral from t equals negative three to zero of g of t dt plus, I'll do this in the yellow color, plus the integral from zero, t equals zero, to t is equal to four of g of t dt. Now what are each of these going to be? Well this is just a triangle where the base is three, the base has length three, the height is length three, so it's going to be three times three, which is nine times one half, because three times three would give us the area of this entire square, but this triangle is half of that. So this right over here is going to be 4.5. And then what's this area in yellow? Well let's see, we have a triangle, its width here is four, its height is four, four times four is 16, which would be the area of this entire square, we take half of that, it's eight.