h(w)=w-7 h(9x-1)=
h(w)=w-7 h(9x-1)= this says to substitute 9x - 1 into the function for "w".....so we have...
(9x - 1) - 7 =
9x - 1 - 7 =
9x - 8 .....and that's it !!!
