Answer:
D
Step-by-step explanation:

on your graph x is not equal to 0 starting from one and going to Infinity.
Answer:
16
Step-by-step explanation:
do the parentheses first to get 4
8/2 x 4
4 x 4
16
Answer: D
Work is shown in picture :)
Answer:
3x-20
Step-by-step explanation:
We can't see the table but if every input or x has only one specific output or y then it is a function so if every different height has one number of stories then it's a function you can have it though to were say you have 18 feet and 17 feet and they are both 3 stories then it's still a function but if you have 18 feet thats 3 stories and 18 feet thats 4 stories then its not a function