Answer:
300
Step-by-step explanation:
That would be 2.25 / 0.0075
= 300
If I did my math right I got 18mm wait for another person to answer as well
If any of your x's repeat (aka 5) then it is not a function. Because in order to be a function you cannot have any of the x's repeat or an x value has more than 1 y value.
Hope this helped!<3