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. So if we're starting at 1,400 and only getting larger and larger values for W, this expression right here is never going to get negative for positive t values, and that's all we care about. And so we can actually drop the absolute value sign. This will always be a positive value.