The following data points represent the number of campsites that are vacant at each campground park along the Shinacook River. Sort the data from least to greatest.
(9,11,12,15,17,18)
find the median number of campsite

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