khalid wants to install a concrete patio in his garden . the patio meters wide by 18 meters long the cost for the patio will be aed7.50 per square meter calculate the range for the cost of the the patio

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