Mr Dotson wants to know if The neighbors on his street would be interested in a community watch he surveyed every fourth household on the street and concluded that 70% would be interested

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas 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