And then times the derivative of x with respect to t. Times the derivative of x with respect to t. So let's see, we wanna find what we have here in orange. That's what the question asks us. They tell us when x is equal to nine and the derivative of x with respect to t is equal to 12. So we have all of the information necessary to solve for this. So this is going to be equal to 1 1 2 times nine to the negative 1 1 2. Nine to the negative 1 1 2. Times dx dt.