F(3)= 16. Essentially, you need to substitute 3 for x, which would look like this: 3(3) + 7. Then, by using PEMDAS/the order of operations, multiply 3 by 3 to get 9, and then add 7 to get 16.
Answers:
1st pic:
a) 2
b) 2.5 or 2
2nd pic:
a) 4
b) 5
c) 9
3rd pic:
a) 5
b) 3
Note: I may not be correct on all of them. Some of them were confusing a little bit, so I just wanted to let you know. Please don't come after me in the comments if I am wrong with one of the answers. In reality, you should be doing this. Either way, I hope this helps! Please, please, PLEASE mark brainliest. I would really appreciate it. :)
I believe it is C, but correct me if I'm wrong.
Answer:
Step-by-step explanation:
4^-3
=1/4^3
=1/64
