What is the solution to the linear equation? 4b + 6 = 2 – b + 4

a.) b = –2
b.) b = 0
c.) b = 4
d.) b = 6

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