The demand and supply curves are given by q=130−3p and q=2p−50, respectively; the equilibrium price is $36 and the equilibrium quantity is 22 units. A sales tax of 4% is imposed on the consumer.

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