Astore sold a case of scented candles for $17.85 that had been marked up 110%. what was the original price?

my teacher hates my class so gives us hard homework );

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