Liang has a goal of walking at least 18 miles. she walks at a rate of 4 miles per hour. what inequality can liang use to find h, the number of hours she should walk to reach her goal

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.