John and megan are selling homemade jewelry to raise money for their band champ. john is selling necklaces for 5 dollars each and megan is selling bracelets for 7 dollars each. let x represent the number of necklaces sold and y represent the number of bracelets sold

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