What is the midpoint of the segment shown below? 10
O A. (-15, -15)
. 10
(-8,-7)
O B. (-15
(-15 , -15)
O C. (-15, -15)
O D. (-15, - 15)
(-7,-8)

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