Answer:
f(f(n)) = -n^4 -8n^2 -20
Step-by-step explanation:
As with any function evaluation, you substitute the argument for the variable and simplify.

Answer:
solve for y is y
=
x
+
3
Solve for x is x
=
−
3
+
y
Step-by-step explanation:
Angle U is the same as Angle Y, and Angle Q is the same as Angle X. Each pair lays on the same ray and are cut by a parallel line which give them the same measurement. I believe they are called congruent.