The bottom of a ladder must be placed 4 feet from a wall. the ladder is 12 feet long. how far above the ground does the ladder touch the wall? round your number to the nearest tenth.

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.