Help me plz asap!! : 2. Simplify:
a. 5x + 3x
b. 9s - 3s + 4s
c. 10t – 6t
d. 8xy + 3xy + x
e. (9x)2
f. 6x

2x

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