The total charge on 7 particles is −42 units. All the particles have the same charge. What is the charge on each particle? a 6 units b 5 units c −5 units d −6 units

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