The mean score on a driving exam for a group of driver's education students is 76 points, with a standard deviation of 3 points. Apply Chebychev's Theorem to the data using k = 2. Interpret the results. At least % of the exam scores fall between (Simplify your answers.) and​

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