A survey of 500 students asked whether the students were satisfied with their textbooks. If 50 students responded "yes," calculate a 98% confidence interval for the sample proportion of students who resoponded no

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