What is the most accurate name for the polygon shown in the figure

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary