Abag contains 5 black marbles, 9 white marbles, and 2 red marbles. one marble is to be chosen at random.

what is the probability that the chosen marble will be red?

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.