edward constructs several similar rectangles using pieces of balm wood. the similar rectangles are based on a rectangle with a length of 3 feet and a width of 5 feet. which of the following dimensions would not be proportional to any of the new rectangles edward could build

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