Answer:
LOL this is from AOPS
Step-by-step explanation:
LOL tryna cheat out here
Answer:
<h2>x = -1 and x = 4</h2>
Step-by-step explanation:

Answer:
Not a Function
Step-by-step explanation:
there are 2 same inputs for different outputs
Supplementary angles. They both add up to equal 180 degrees