Which one of these four triangles is not similar? Explain how you know. Write a few sentences and be sure to explain completely.

Triangle D is different.

Every triangle is right-angled except for triangle D.

Proof for the 3rd angle of triangle D:

120+30+x = 180

150+x = 180

x = 30

Therefore, we can prove that there are no right angles in triangle D.

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)