One online seller has about 6x10to the 8th online orders, and another online seller has about 5x10 to the 7th orders. how many times more order does the first company have?

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