Two trains are running on side by side tracks but train A is 52 miles ahead of train B. If train A is traveling at 62 miles per hour and train B is traveling at 70 miles per hour how long will it take for train B to move ahead of train A?

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