Afirefighter is standing in front of a 24 step ladder. every minute he climbs 4 steps then the next minute he climbs down 3 steps. if he starts a 9: 00, what time will he reach the first step on the top rung of the ladder?

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