Question

For f(x) = x + 10 find f of^-1(10)

Answer 1

its find what?

Answer 2

its 18

Answer 3

Please restate your question. Ok, there is a function which maps (transforms) x to x +10, that's clear. What do you mean by ^-1(10)?

Answer 4

Just for future reference, this question belongs in the Mathematics subject, not the Writing subject.