and advertising company plans to market a product to low income families with stations that for a particular area the average income for family is $24596 in the standard deviation is $6256. If the company plans to target the bottom 18% of families based on income, find the cutoff income. assume the variable is normally distributed

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