Question

If the range of the function f(x)=x4 is {28, 30, 32, 34, 36}, what is its domain?

Answer 1

range is ouutput from inputing the input
domain is input

f(x)=4x
28=4x, x=7
30=4x, x=15/2
32=4x, x=8
34=4x, x=17/2
36=4x, x=9

domain is {7,15/2, 8, 17/2, 9}