Which is the correct input-output table for the function f(x)= 3/x+4 ?

Input (x) -3 -2 1 2 3
Output f(x) -1.5 -2 5 3.5 3

Input (x) -3 -2 1 2 3
Output f(x) 3 2.5 7 5.5 5

Input (x) -3 -2 1 2 3
Output f(x) -1 1.5 5 7 7.5

Input (x) -3 -2 1 2 3
Output f(x) 1 4 3.5 6 4.5

Question

Which is the correct input-output table for the function  f(x)= 3/x+4 ?

Input (x)	-3	-2	1	2	3
    Output f(x)	-1.5	-2	5	3.5	3

Input (x)	-3	-2	1	2	3
    Output f(x)	3	2.5	7	5.5	5

Input (x)	-3	-2	1	2	3
    Output f(x)	-1	1.5	5	7	7.5

Input (x)	-3	-2	1	2	3
    Output f(x)	1	4	3.5	6	4.5

anonymous · Answer

As you may already know, a function takes an input number, does something to it then outputs it. In this case we are finding 3/x then adding 4 to it. As all of the inputs are the same in the answers, all we need to do is check these inputs and see which answer matches our outputs
$$f(-3)=\dfrac{3}{-3}+4=?$$$$f(-2)= ?$$$$f(1)=?$$$$f(2)=?$$$$f(3)=?$$