Divide both sides by negative six, you get t is equal to two. So, a couple of things, you could just say, alright, look, I know that this is a downward opening quadra, parabola right over here, I have a negative coefficient on my second degree term. I know that the slope of the tangent line here is zero at t equals two, so that's gonna be my maximum point. Or you could go a little bit further, you could take the second derivative, you, let's do that, just for kicks. So we could take the second derivative of our acceleration function. So this is going to be equal to negative six, right? So the derivative of negative six t is negative six, the derivative of constant is just zero.