Urgent! geometry, i am completely lost

i dont understand how to do this hardly at all.

the only thing i can think of is that the exterior angles add up to 360

x + 16 + 3x -1 + 6x + 6x = 360
and then x = 23

but i am honestly not sure

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

Write a similarity statement for the similar triangles. afgh ~ a

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b