Answer:

Step-by-step explanation:
Hello, please consider the following.

Hope this helps.
Do not hesitate if you need further explanation.
Thank you
F(x)= 2(4)-12
F(x)= 8-12
-4 is the answer
Just think about it
right angles are the very definition of perpendicular
how many right angles in a full rotation? 4
answer is 4
0.85 is equal to 6/7 because you divide six by seven....Hope this helped.