I chose three because 3*4 is twelve and 36 divided by twelve is three
I’m so sorry if some of them are wrong, I haven’t did this in a few years but I’m pretty sure almost all of them are right.
Number 15 is the only function on the page because a function is when even input has a different output. so 2 numbers can’t be equal to the same output. 14 is the only one that fits that description. 13 implies that’s it’s not a function bc there are only 3 outputs (1,2, or 3) and there are 4 inputs meaning that every input will not have a different output making it not a function