So when it's 24, so 24 is gonna be roughly over here. It's gonna be negative 220. So negative 220 might be right over there. And then finally, when time is 40, her velocity is 150, positive 150. So at 40, it's positive 150. And so these are just sample points from her velocity function, but what we wanted to do is we wanted to find, in this problem, we wanted to say, okay, when t is equal to 16, what is the rate of change? And we don't know much about, we don't know what v of 16 is, but what we could do is, and this is essentially what we did in this problem, we could say, all right, well, we can approximate what the function might do by roughly drawing a line here.