*ASAP please*

Thanks alot!

e) Determine whether each of the following functions from Z to Z is one-to-one and/or onto: f) Determine whether each of the following functions from ZaZ Z is onto: g Determine whether each of the following functions is a bijection from R to R: r +1 f(x)--3x+7, fx)- +2 Show that ifx is a real number, thenx7-LxJJ-1 ifx is not an integer and ITxT-LLrJJ-0 ifx is an integer. h)