Jen solved the equation to determine the number of questions, x, she answered incorrectly on a test. she began by subtracting 100 from both sides, then multiplying both sides by –2. which best describes the accuracy of jen’s work?

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