Akiko works as a ski instructor. He has read that human-triggered avalanches occur most often on slopes with angles of elevation between 35º and 45°. a) What are the slopes of these two angles of elevation? b) what is the percentage grades

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