The ratio of orange juice to pineapple juice in Tropicana punch is 4 oz to 3 oz if there is 64 oz of orange juice, how much pineapple juice will there be ? number answer only

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