The domain is (0,infinity)
range is (negative infinity ,infinity )
Answer: C
Step-by-step explanation:
To solve for 12, we can use eliminate or substituion to solve our system of equations. Let's use elimination method.

Let's add the equations together. This way, 3f+(-3f)=0
[divide both sides by -4]

Now that we know k, we can plug it into either equation to find f.
[multiply]
[subtract both sides by 12]
[divide both sides by 3]

Now that we have f and k, we know that C is the correct answer.
quadrant IV
Sure hope this helped you, have a good day! =)
Answer:
x=90/7
Step-by-step explanation:
7x=90
x=90/7