This is going to be positive. If you take minus 2.99 to the fourth, that's going to be a little bit less than 81 because 2.99 to the fourth is a little bit less than 81. This is still going to be positive. You have positive times a positive divided by a positive. You're going to be concave upwards because your second derivative is going to be greater than 0. Concave upwards. Finally, when x is just less than negative 3, remember when I write this, I don't mean for all x's larger than negative 3 or all x's smaller than negative 3.