I need help please someone help

For how answer my question this will be the last question can you answer in math subject

Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?

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