9. Harry kept a weather journal for September. The sun was shining on 4 out of every 5 days. On what percent of the days was the sun not shining? SEPTEMBER 2018 SAT FRI THU TUE WED SUN MON 1 6 7 8 5 4 2 3 11 12 13 14 15 10 9 339 6-1 Understand Percent

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.