So 1,400, W is equal to 1,400, when t is equal to zero, is equal to zero plus C. Or another way to think about it is, the natural log of the absolute value of 1,100 is equal to C. And obviously this is a positive value, so we can just say that C is equal to the natural log of 1,100. We can drop the absolute value signs, because the absolute value of 1,100 is 1,100. So now we can rewrite this part right over here. Let me do it in yellow, let me start, that's not yellow, let me start right over here. So we could write the natural log of the absolute value of W minus 300. And actually, we know that W is an increasing function. W starts at 1,400 and only goes up from there as t gets larger and larger.