Meghan is building a fence around her garden .the garden is a rectangle 12 feet long and 24 feet wide. she wants to put a post up at each corner and every 3 feet along the sides. how many post will meghan need for her garden ?

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