How would i solve this does anyone know?

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

Why is partitioning a directed line segment into a ratio of 1: 3 not the same as finding the length of the directed line segment?

Your baking cupcakes for the school dance, your recipe makes 24 cupcakes and needs 2 cups of milk. you need to make 288 cupcakes, how many quarts of milk will you need?