If f(x) =
2x - 5
3
what is f-'(x)?​

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Is the square root of 4 plus the square root of 16 rational?

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders