The measures of two angles of a triangle are given below. Find the measure of the third angle of the triangle in decimal form. 22.8°, 65.3°

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas 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