Answer:
A
Step-by-step explanation:
By vertical line test, if you draw any vertical line, except for A, all graph meet at more than two points. So, graph A represents y as a function of x.
81 if the number is higher than 5 or equal to 5 you round up
The answer is 8.08
mark me brainliest if the answer is correct, thank you in advance :)
