This is going to be equal to, if we take 80 times two is 160, times negative 0.1. That's gonna be negative 16. 160 times 0.1 is 16. So negative 16 times one minus 0.1t. And if we want, we could distribute the 16 or we could just leave it like this. But we're ready now to answer our questions. We could write this as the rate of change of the number of words we know with respect to time.