Question

A C and D?

Answer 1

I know this is definitely D because I have it in my notes

Answer 2

@Vocaloid

Answer 3

The rest I am just making an educated guess on

Answer 4

it doesn't pass the horizontal line test (you can draw a horizontal line through each of the "segments" and it fails) so it's not one to one

Answer 5

OKay so we have d so far

Answer 6

this is actually a floor function (it rounds down to the nearest integer) so f(4.9) actually rounds to 4 not 5

Answer 7

so it is not e either

Answer 8

because no matter what it is rounded to the left of the number on a number line?

Answer 9

so it's just D I believe