Mary wants to figure out how much space she has in her pencil holder. what is the volume, in cubic centimeters, of her pencil holder? use 3.14 for tt formula: v = ttr2h

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